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Jim can assemble b crates an hour and Robert can assemble 2b
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21 Apr 2020, 09:42
21 Apr 2020, 09:42
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Question Stats:
100% (00:45) correct
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Jim can assemble b crates an hour and Robert can assemble 2b crates in an hour. Working together at this rate, how many crates can they assemble in four hours?
A) 3b
B) 6b
C) 8b
D) 12b
E) 18b
A) 3b
B) 6b
C) 8b
D) 12b
E) 18b
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Joined: 10 Apr 2015
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Re: Jim can assemble b crates an hour and Robert can assemble 2b
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21 Apr 2020, 09:46
21 Apr 2020, 09:46
1
Carcass wrote:
Jim can assemble b crates an hour and Robert can assemble 2b crates in an hour. Working together at this rate, how many crates can they assemble in four hours?
A) 3b
B) 6b
C) 8b
D) 12b
E) 18b
A) 3b
B) 6b
C) 8b
D) 12b
E) 18b
Let's apply some logic to solve this question
Given: Jim can assemble b crates in 1 hour
So: Jim can assemble 2b crates in 2 hours [if we double the work time, we double the output]
So: Jim can assemble 4b crates in 4 hours [if we double the work time (again), we double the output]
Given: Robert can assemble 2b crates in 1 hour
So: Robert can assemble 4b crates in 2 hours [if we double the work time, we double the output]
So: Robert can assemble 8b crates in 4 hours [if we double the work time (again), we double the output]
So, when we COMBINE their efforts, we add their 4-hour OUTPUTS
That is, TOTAL output = color=red]4b[/color] + color=red]8b[/color] = 12b
Answer: D
Cheers,
Brent
gmatclubot
Re: Jim can assemble b crates an hour and Robert can assemble 2b [#permalink]
21 Apr 2020, 09:46
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