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

 It is currently 21 Oct 2019, 13:57

### 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

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

# A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 58396
A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the  [#permalink]

### Show Tags

26 Mar 2019, 23:37
00:00

Difficulty:

25% (medium)

Question Stats:

89% (01:09) correct 11% (02:06) wrong based on 19 sessions

### HideShow timer Statistics

A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the machine has completed one third of the day's job. At what time will the doughnut machine complete the job?

(A) 1:50PM
(B) 3:00PM
(C) 3:30PM
(D) 4:30PM
(E) 5:50PM

_________________
Manager
Joined: 05 Oct 2017
Posts: 101
Location: India
Schools: ISB '21, IIMA , IIMB
GPA: 4
WE: Analyst (Energy and Utilities)
Re: A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the  [#permalink]

### Show Tags

26 Mar 2019, 23:47
Bunuel wrote:
A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the machine has completed one third of the day's job. At what time will the doughnut machine complete the job?

(A) 1:50PM
(B) 3:00PM
(C) 3:30PM
(D) 4:30PM
(E) 5:50PM

The machine completes 1/3 of the work in (11:10 A.M - 8:30 AM) 2 hr 40 min = 8/3 hrs.

So the machine will complete the total work in = $$(8/3)/(1/3)$$ = 8 hrs

The machine started at 8:30 a.m and will complete the work in 8 hrs

So the job will be completed on 4:30 P.M . Answer (D)
GMAT Club Legend
Joined: 18 Aug 2017
Posts: 5027
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
Re: A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the  [#permalink]

### Show Tags

27 Mar 2019, 02:42
Bunuel wrote:
A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the machine has completed one third of the day's job. At what time will the doughnut machine complete the job?

(A) 1:50PM
(B) 3:00PM
(C) 3:30PM
(D) 4:30PM
(E) 5:50PM

total time 8:30 to 11:10 am ; 160 mins
so rate per hr to complete 1/3 work
1/3 = 160/60 * rate
rate = 60/160*3 ; 1/8 hrs
so to complete 1 complete work it takes 8 hrs
starting at 8:30 am ends at 4:30 pm
IMO D
Intern
Joined: 13 Feb 2019
Posts: 2
A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the  [#permalink]

### Show Tags

27 Mar 2019, 02:51
Starting at 8:30, completing 1/3rd of the day task by 11:30 means. It took 2hrs 40min to complete this portion.

Total time of cometion would be:
2hrs 40 min + 2hrs 40 min + 2hrs 40 min= 8 hrs

To get final time:
Add 8hrs to 8:30 AM and see the time, which comes as 4:30 PM

And is D

Posted from my mobile device
Target Test Prep Representative
Status: Founder & CEO
Affiliations: Target Test Prep
Joined: 14 Oct 2015
Posts: 8117
Location: United States (CA)
Re: A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the  [#permalink]

### Show Tags

29 Mar 2019, 07:45
Bunuel wrote:
A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the machine has completed one third of the day's job. At what time will the doughnut machine complete the job?

(A) 1:50PM
(B) 3:00PM
(C) 3:30PM
(D) 4:30PM
(E) 5:50PM

The number of hours from 8:30 am to 11:10 am is 2 hours 40 minutes = 2 2/3 hours = 8/3 hours. Creating a proportion, we have:

(8/3)/(1/3) = n/1

24/3 = n

8 = n

So the job is completed at 8:30 am + 8 hours = 4:30 pm.

_________________

# Scott Woodbury-Stewart

Founder and CEO

Scott@TargetTestPrep.com
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

If you find one of my posts helpful, please take a moment to click on the "Kudos" button.

Re: A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the   [#permalink] 29 Mar 2019, 07:45
Display posts from previous: Sort by