GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 23 Oct 2018, 20:32

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Two boys, Joe and Seth, can mow a lawn in 2 hours thirty minutes. If 3

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 50058
Two boys, Joe and Seth, can mow a lawn in 2 hours thirty minutes. If 3  [#permalink]

Show Tags

New post 11 Apr 2017, 01:07
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

95% (00:54) correct 5% (00:24) wrong based on 53 sessions

HideShow timer Statistics

Two boys, Joe and Seth, can mow a lawn in 2 hours thirty minutes. If 3 other boys, Mike, Tommy and Teddy, helped, how long would it take to mow the same lawn with all of them starting at the same time?

(1) It would take Mike, Tommy and Teddy 1 hour and forty minutes to mow the entire lawn.
(2) It would take each boy 5 hours to mow the law alone.

_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Intern
Intern
avatar
B
Joined: 12 Dec 2010
Posts: 40
GMAT ToolKit User CAT Tests
Re: Two boys, Joe and Seth, can mow a lawn in 2 hours thirty minutes. If 3  [#permalink]

Show Tags

New post 12 Apr 2017, 00:20
IMHO D,

Statement 1
The combined rate of the Mike Tommy and teddy is 1/one hour 40 mins or 1/ 100 mins which when added with the combined rate of Joe and Smith 1/(2:30) or 1/150 mins gives the combined rate as 1/100 + 1/150 which is 1/60(mins) or 1 hour. SUFFICIENT

Statement 2:

Each boy takes 5 hours individually and together 5 boys can do in an hour. SUFFICENT


Sent from my ONEPLUS A3003 using GMAT Club Forum mobile app
Manager
Manager
User avatar
S
Joined: 10 Apr 2015
Posts: 189
GPA: 3.31
Re: Two boys, Joe and Seth, can mow a lawn in 2 hours thirty minutes. If 3  [#permalink]

Show Tags

New post 12 Apr 2017, 09:29
Two boys, Joe and Seth, can mow a lawn in 2 hours thirty minutes. If 3 other boys, Mike, Tommy and Teddy, helped, how long would it take to mow the same lawn with all of them starting at the same time?

(1) It would take Mike, Tommy and Teddy 1 hour and forty minutes to mow the entire lawn.
Suff.
(2) It would take each boy 5 hours to mow the law alone.
suff.

AnsD
_________________

In case you find my posts helpful, give me Kudos. Thank you.

GMAT Club Bot
Re: Two boys, Joe and Seth, can mow a lawn in 2 hours thirty minutes. If 3 &nbs [#permalink] 12 Apr 2017, 09:29
Display posts from previous: Sort by

Two boys, Joe and Seth, can mow a lawn in 2 hours thirty minutes. If 3

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.