Author 
Message 
TAGS:

Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 62353

A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:00
Question Stats:
76% (01:02) correct 24% (00:56) wrong based on 294 sessions
HideShow timer Statistics
A maritime shipping company sends out at least 1 ship ship every day. For a certain seven days, is the total number of the ships departed more than 25? (1) In one of the seven days, 20 ships departed. (2) The numbers of ships departed are different each day.
Official Answer and Stats are available only to registered users. Register/ Login.
_________________




Manager
Joined: 29 Nov 2018
Posts: 158
Location: India
Concentration: Entrepreneurship, General Management
GPA: 3.99
WE: Engineering (Computer Hardware)

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:17
A maritime shipping company sends out at least 1 ship ship every day. For a certain seven days, is the total number of the ships departed more than 25?
(1) In one of the seven days, 20 ships departed. Since in one of the seven days 20 ships departed, and from question stem we know atleast one ship departed each of the other 6 days. Total ship departed is atleast 26  Sufficient
(2) The numbers of ships departed are different each day. If number of ships departed each day are different, the least number of ship that will depart in those 7 days are 1+2+3+4+5+6+7 = 28. hence it is Sufficient
Answer is D




Manager
Joined: 15 Jul 2018
Posts: 236

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:09
Statement 1 shows that min of 26 ships will go in 7 days  Sufficient
Statement 2 conveys that if we consider 1+2+3+4+5+6+7 different number of ships each day then also the sum is > 25
Option is D
Posted from my mobile device



Senior Manager
Joined: 27 Aug 2014
Posts: 371
Location: Netherlands
Concentration: Finance, Strategy
GPA: 3.9
WE: Analyst (Energy and Utilities)

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:18
IMO answer is D
from 1: let d1, d2, d3, d4, d5, d6 ,d7 be the number of ships on each day. therefore as one of the days has 20 ships departed, and rest of the days atleast 1 ship departed, total least number = 20+6*1 = 26>25, so suff from 2: d1,d2,d3...d7 each are different and all numbers are >1 so, least number is 1,2,3,4,5,6,7, total number = 1+2+3+4+5+6+7 >25 , so suff



ISB School Moderator
Joined: 08 Dec 2013
Posts: 766
Location: India
Concentration: Nonprofit, Sustainability
GMAT 1: 630 Q47 V30
WE: Operations (NonProfit and Government)

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:18
Each statement independently sufficient.
Case A# Day 1 2 3 4 5 6 7 Let on day 1 20 ships departed then on the remaining 6 days at least 6 ships departed, so (20+6)>25, Sufficient
Case B# Day 1 2 3 4 5 6 7 Minimum possible number of ships as per the conditions= Sum(1 to 7)=> 28 which is >25, Sufficient



Director
Joined: 04 Sep 2015
Posts: 673
Location: India
WE: Information Technology (Computer Software)

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:19
IMO : D
A maritime shipping company sends out at least 1 ship ship every day. For a certain seven days, is the total number of the ships departed more than 25?
(1) In one of the seven days, 20 ships departed. (2) The numbers of ships departed are different each day.
1: (at least 1 ship each day and 20 on one day):
day1:20 day2:1 day3:1 day4:1 day5:1 day6:1 day7:1
=20+6=26 thus it is sufficeint.
2: different number everyday (at least 1 ship each day):
day1:1 day2:2 day3:3 day4:4 day5:5 day6:6 day7:7
total=28 thus sufficient.



Manager
Joined: 27 Mar 2018
Posts: 80
Location: India

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:21
1) One of the 7 days, 20 ships departed. If only one ship departed on all remaining 6 days, total ships depated = 26 (>25). Sufficient.
2) The numbers of ships departed are different each day. Given atleast 1 ship departs each day, minimum possible number of ships that departed in 7days = 1+2+3+4+5+6+7=28(>25). Sufficient.
Hence option D



Manager
Joined: 12 Apr 2017
Posts: 145
Location: United States
Concentration: Finance, Operations
GPA: 3.1

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:25
Is X > 25, Yes or No
X = total number of ships departed, one ship is sent out each day. Going to be integers > 0
I went with D.
1) one day is at least 20, Sufficient M = 20 T = 1 W = 1 TH = 1 Fri = 1 S = 1 S = 1
Total = 26 at the minimum
2) The numbers of ships departed are different each day. Sufficient
at the very minimum you will have 1,2,3,4,5,6,7, each number representing a day of the week. Sum together and you get 28



Manager
Joined: 10 Mar 2016
Posts: 157
Location: India
Concentration: Finance, Real Estate
WE: Corporate Finance (Commercial Banking)

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:25
(1) In one of the seven days, 20 ships departed.
If 20 ships departed on first day, and if we consider 1 ship each day then the total no of ships departed will be more than 25
Hence sufficient
(2) The numbers of ships departed are different each day.
The pattern will be 1+2+3+4+5+6+7 = 28
Hence sufficient
Answer should be D.



Manager
Joined: 24 Jun 2013
Posts: 142
Location: India

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:30
A) lets assume one first day 20 ships departed , then considering least number for rest of the days (which is 1) we get 6 ships in 6 days ; so total atleast 26 ships would depart in 7 days ; Suff
B) different number of ship departing each day will have min 28 ships : Suff
D ans



Director
Joined: 07 Mar 2019
Posts: 905
Location: India
WE: Sales (Energy and Utilities)

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:32
IMO Answer is (D) Question asks for Sum of numbers of ships sent in a certain seven day period. 1) 20+1+1+1+1+1+1 =26 > 25 (Reasoning  At least one ship sent each day hence the minimum value for each of remaining six days is 1) 2) As all seven days have different values having at least a value of '1' for one of the seven days. Thus, the minimum numbers possible for other six remaining days are 2,3,4,5,6,7. Therefore sum of 1+2+3+4+5+6+7 i.e. 28 >25 Hence Answer D
_________________
Ephemeral Epiphany..!
GMATPREP1 590(Q48,V23) March 6, 2019 GMATPREP2 610(Q44,V29) June 10, 2019 GMATPREPSoft1 680(Q48,V35) June 26, 2019



Manager
Joined: 26 Jan 2016
Posts: 181

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:32
given: each day ships departed >= 25 1. In one of the seven days, 20 ships departed. So, if we assume minimum ships were departed on other six days i.e. 1 each day then total ships departed in 7 days= 20+6=26 >25. Sufficient 2.The numbers of ships departed are different each day Say, number of ships departed are 1,2,3,4,5,6,7 for seven days Sum=28>25. Sufficient
Hence D



Manager
Joined: 30 Nov 2017
Posts: 194
WE: Consulting (Consulting)

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:33
Given that: at least 1 ship departs everyday for 7 days To find if the ships is greater than 25 for a 7 day period Statement 1: 20 ships departed in one day and if at least 1 ships departs every other day therefore, 20 + 6 > 25 This is sufficient  AD Statement 2: the numbers departed are different on each day and at least one must depart on each day from the general information if for instance, the following happens; Day 1 = 1 Day 2 = 2 Day 3 = 3 Day 4 = 4 Day 5 = 5 Day 6 = 6 Day 7 = 7 We will have a total of 28 > 25 Thus, this is sufficient Hence answer choice D.
_________________
Be Braver, you cannot cross a chasm in two small jumps...



Senior Manager
Joined: 05 Mar 2017
Posts: 266
Location: India
Concentration: General Management, Marketing
GPA: 3.6
WE: Marketing (Hospitality and Tourism)

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:34
A maritime shipping company sends out at least 1 ship ship every day. For a certain seven days, is the total number of the ships departed more than 25?
Fairly simple question, all we are looking for is the total number of ships departed more than 25, given the fact that a minimum of 1 ship is departing every day.
Let's see the statements
(1) In one of the seven days, 20 ships departed. So even if the other days at least 1 ship is departed then the number is more than 25. hence the answer is YES. this is sufficient.
(2) The numbers of ships departed are different each day. Let's take the worstcase scenario. Please see the numbers will be integers only as there is no concept of half ship departed. So taking only the consecutive numbers from 1 to 7, the total is more than 25, hence the answer is YES. This statement is sufficient.
Both give us YES, Hence the answer is D.



Manager
Joined: 26 Mar 2019
Posts: 111
Concentration: Finance, Strategy

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:35
Quote: A maritime shipping company sends out at least 1 ship ship every day. For a certain seven days, is the total number of the ships departed more than 25? Let us analyze the information given in the task. Time = 7 days Each day, we have at least 1 ship departing. It means, that we have at least 7 ships departed for 7 days. Our goal is to find out if the number of ships is more than 25? Is N (number of ships) > 25? Let us analyze each statement separately first. Statement 1: (1) In one of the seven days, 20 ships departed. It means that in day 1, let us say, 20 ships departed. We also have 7  1 = 6 other days, when there was at least one ship departed. It clearly means that we have at least N = 20 + 6 * 1 = 26 ships departed during the week. 26 > 25Thus, the statement 1 is sufficient to solve the question. Sufficient. Statement 2:(2) The numbers of ships departed are different each day. If numbers of ships are different each day, and each day at least one ship is departed, the minimum number of ships would be N = 1 + 2 + 3 + 4 + 5 + 6 + 7N = 28 > 25As we can see, statement 2 alone is also sufficient. Thus, both statements separately are sufficient Answer: D



SVP
Joined: 03 Jun 2019
Posts: 2438
Location: India
GMAT 1: 690 Q50 V34
WE: Engineering (Transportation)

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:35
A maritime shipping company sends out at least 1 ship ship every day. For a certain seven days, is the total number of the ships departed more than 25?
(1) In one of the seven days, 20 ships departed. (2) The numbers of ships departed are different each day.
Given: A maritime shipping company sends out at least 1 ship ship every day. Asked: For a certain seven days, is the total number of the ships departed more than 25?
(1) In one of the seven days, 20 ships departed. Since the maritime shipping company sends out at least 1 ship ship every day. In each of the other days, minimum ships departed=1 Total minimum number of ships departed in 7 days = 20+1+1+1+1+1+1 =26>25 SUFFICIENT
(2) The numbers of ships departed are different each day. Since the maritime shipping company sends out at least 1 ship ship every day & The numbers of ships departed are different each day. Minimum number of ships departed in 7 days = 1+2+3+4+5+6+7= 28>25 SUFFICIENT
IMO D



Senior Manager
Joined: 10 Aug 2018
Posts: 340
Location: India
Concentration: Strategy, Operations
WE: Operations (Energy and Utilities)

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:36
Each alone is sufficient as the number will always be greater than 25 Posted from my mobile device
_________________
On the way to get into the Bschool and I will not leave it until I win. WHATEVER IT TAKES. " I CAN AND I WILL"



Intern
Joined: 14 Nov 2018
Posts: 39
Location: Austria

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:37
A maritime shipping company sends out at least 1 ship ship every day. For a certain seven days, is the total number of the ships departed more than 25?
(1) In one of the seven days, 20 ships departed. We know that at least 1 ship sails every day, on a total of 7 days. Therefore, on 6 days a total of 6 ships sail. Considering that on 1 of the 7 days 20 ships sail, that means: Total sailed: 6 + 20 = 26. Can determine if "ships departed" > 25
SUFFICIENT
(2) The numbers of ships departed are different each day. Since there are 7 days and we know that at least 1 ship must sail every day, the least number of ships can be: 1 + 2 + 3 + 4 + 5 + 6 + 7 = 28. Can determine if "ships departed" > 25
SUFFICIENT
Therefore, I believe the answer choice should be D.



Current Student
Joined: 30 May 2018
Posts: 161
Location: Canada
GMAT 1: 710 Q49 V36
GPA: 3.8

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:38
D
We know atleast one ship is departed each day.
(1) In one of the seven days, 20 ships departed.
One day 20 ships departed, and remaining 6 days minimum 6 ships are departed, so minimum 26 ships are departed  Sufficient
(2) The numbers of ships departed are different each day.
We know minimum 1 ship is departed each day. In order for different ships being departed each day, minimum ships have to be 1+2+3+4+5+6+7 = 28  Sufficient



Manager
Joined: 12 Mar 2019
Posts: 157

Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
Show Tags
16 Jul 2019, 07:38
IMO : D (1) In one of the seven days, 20 ships departed. : We are left with 6 days, Consider lowest no , of ships departed i.e 1 *6 +20 = 26, >25, So sufficient (2) The numbers of ships departed are different each day. : Only possible way is 1,2,3,4,5,6,7 =28 >25 Sufficient
So both are individually sufficient to answer




Re: A maritime shipping company sends out at least 1 ship ship every day.
[#permalink]
16 Jul 2019, 07:38



Go to page
1 2 3 4 5
Next
[ 98 posts ]



