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02 Jul 2023, 05:27
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B
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Difficulty:
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Question Stats:
85% (01:00) correct
15%
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wrong
based on 409
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Tracy and Lee are installing tile on the floor of a shopping center. Tracy installs 200 tiles per hour and Lee installs 160 tiles per hour. If their hourly pay is proportional to the rate at which they install tiles, Tracy's hourly pay is what percent greater than Lee's hourly pay?
A. 20%
B. 25%
C. 40%
D. 80%
E. 125%
A. 20%
B. 25%
C. 40%
D. 80%
E. 125%
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02 Jul 2023, 06:48
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MasteringGMAT
Let's assume the pay for installing one tile = $1. Tracy and Lee works for one hour.
Pay received by Tracy = $\(200\)
Pay recieved by Lee = $\(160\)
Difference = $\((200 - 160)\) = $\(40\)
Required percentage = \(\frac{40}{160} * 100 = 25\)%
Option B
General Discussion
04 Jul 2023, 04:52
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MasteringGMAT
Since their hourly wage is proportional to the rate at which they install tiles, we have:
w_T/w_L = 200/160 = 5/4 = 1.25
w_T = (1.25)w_L
A factor of 1.25 corresponds to “25% greater.”
Answer: B
