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It takes Mike 1 hour and 30 minutes to commute from home to work at an average speed of 40...

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It takes Mike 1 hour and 30 minutes to commute from home to work at an average speed of 40...

by BTGmoderatorLU » Sat Feb 22, 2020 11:04 am
Source: Princeton Review

It takes Mike 1 hour and 30 minutes to commute from home to work at an average speed of 40 miles per hour. If Mike returns home along the same route at an average speed of 45 miles per hour, how long does the return trip take?

A. 1 hour, 15 minutes
B. 1 hour, 20 minutes
C. 1 hour, 25 minutes
D. 1 hour, 30 minutes
E. 1 hour, 35 minutes

The OA is B
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Re: It takes Mike 1 hour and 30 minutes to commute from home to work at an average speed of 40...

by Scott@TargetTestPrep » Sat Feb 29, 2020 11:12 am
BTGmoderatorLU wrote: ↑
Sat Feb 22, 2020 11:04 am
 Source: Princeton Review

It takes Mike 1 hour and 30 minutes to commute from home to work at an average speed of 40 miles per hour. If Mike returns home along the same route at an average speed of 45 miles per hour, how long does the return trip take?

A. 1 hour, 15 minutes
B. 1 hour, 20 minutes
C. 1 hour, 25 minutes
D. 1 hour, 30 minutes
E. 1 hour, 35 minutes

The OA is B
The distance between Mike’s home and his workplace is 40 x 1.5 = 60 miles. Therefore, the return trip takes 60/45 = 4/3 hours = 1 ⅓ hours = 1 hour 20 minutes.

Answer: B

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