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

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

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New post 26 Mar 2019, 23:37
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

87% (01:05) correct 13% (02:06) wrong based on 15 sessions

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Location: India
Concentration: Finance, International Business
Schools: ISB '21, IIMA , IIMB
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WE: Analyst (Energy and Utilities)
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Re: A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the  [#permalink]

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New post 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)
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Re: A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the  [#permalink]

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New post 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
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A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the  [#permalink]

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New post 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

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

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New post 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.

Answer: D
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Re: A bakery owner turns on his doughnut machine at 8:30AM. At 11:10AM the   [#permalink] 29 Mar 2019, 07:45
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