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Hector can solve one word problem every 4 minutes before noon, and one
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27 Feb 2023, 03:04
27 Feb 2023, 03:04
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Question Stats:
88% (00:47) correct
12% (01:25) wrong based on 25 sessions
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Hector can solve one word problem every 4 minutes before noon, and one word problem every 10 minutes after noon.
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
The number of word problems Hector can solve between 11:40am and noon |
The number of word problems Hector can solve between noon and 12:40pm |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Re: Hector can solve one word problem every 4 minutes before noon, and one
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25 Mar 2023, 09:59
25 Mar 2023, 09:59
Expert Reply
OE
This problem can be solved using an RTW chart or by a proportion. There are 20 minutes between 11:40am and noon, and 40 minutes between noon and 12:40pm. Hector’s work rate is different for the two time periods. For the work period before noon, this is the proportion: Let b represent the number of problems Hector solves before noon:
b/20 minutes=1 problem / 4 min
b=5
Let a represent the number of problems Hector solves after noon:
a/40 minutes=1 problem/10 minutes
a=4
A >B
This problem can be solved using an RTW chart or by a proportion. There are 20 minutes between 11:40am and noon, and 40 minutes between noon and 12:40pm. Hector’s work rate is different for the two time periods. For the work period before noon, this is the proportion: Let b represent the number of problems Hector solves before noon:
b/20 minutes=1 problem / 4 min
b=5
Let a represent the number of problems Hector solves after noon:
a/40 minutes=1 problem/10 minutes
a=4
A >B
gmatclubot
Re: Hector can solve one word problem every 4 minutes before noon, and one [#permalink]
25 Mar 2023, 09:59
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