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02 Nov 2018, 12:11
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E
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Difficulty:
25%
(medium)
Question Stats:
79% (01:44) correct
21%
(02:19)
wrong
based on 388
sessions
History
Date
Time
Result
Not Attempted Yet
If Norbert can cut up one plastic six pack container in 30 seconds, how long will take it take him to cut up 512 six pack containers?
(A) 4 hours
(B) 4 hours 4 minutes
(C) 4 hours 12 minutes
(D) 4 hours 15 minutes
(E) 4 hours 16 minutes
(A) 4 hours
(B) 4 hours 4 minutes
(C) 4 hours 12 minutes
(D) 4 hours 15 minutes
(E) 4 hours 16 minutes
02 Nov 2018, 16:06
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1 six-pack in 30 second
512 six-packs in ?
512x0.5mins, double the decimal and half the whole number so it's easier to work with
256x1 min=256mins
256÷60 is hard
So simply: 60, 120, 180, 240
256-240=16
4 hours and 16 mins
E
512 six-packs in ?
512x0.5mins, double the decimal and half the whole number so it's easier to work with
256x1 min=256mins
256÷60 is hard
So simply: 60, 120, 180, 240
256-240=16
4 hours and 16 mins
E
Updated on: 17 May 2021, 07:36
Originally posted by BrentGMATPrepNow on 02 Apr 2019, 07:58.
Last edited by BrentGMATPrepNow on 17 May 2021, 07:36, edited 1 time in total.
Last edited by BrentGMATPrepNow on 17 May 2021, 07:36, edited 1 time in total.
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CAMANISHPARMAR
We can solve this question by applying equivalent ratios
For every 30 seconds that elapse, Norbert can cut up 1 plastic six-pack container
In other words, for every 0.5 MINUTES that elapse, Norbert can cut up 1 plastic six-pack container
Let t = the time (in MINUTES) to cut up 512 plastic six-pack containers
We can write: t/512 = 0.5/1
Cross multiply to get: (1)(t) = (512)(0.5)
Simplify to get: t = 256 MINUTES
256 minutes = 240 minutes + 16 minutes
= 4 hours + 16 minutes
Answer: E
Cheers,
Brent
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