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Car \(M\) was driving on a highway at a constant speed of 50 miles per hour. If Car \(N\) was 3 miles behind Car \(M\)

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Car \(M\) was driving on a highway at a constant speed of 50 miles per hour. If Car \(N\) was 3 miles behind Car \(M\)

by Vincen » Sun Jan 03, 2021 9:04 am

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Car \(M\) was driving on a highway at a constant speed of 50 miles per hour. If Car \(N\) was 3 miles behind Car \(M\) 20 minutes ago and 2 miles ahead of Car \(M\) 5 minutes ago, what was the speed of Car \(N?\) Assume that Car \(N\) was driving at a constant speed.

A. 60 miles per hour
B. 70 miles per hour
C. 90 miles per hour
D. 100 miles per hour
E. 110 miles per hour

Answer: B

Source: e-GMAT
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