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04 Sep 2019, 06:09
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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Cars A and B travel the same 140-mile route. If car A takes 3 hours and 30 minutes to complete the drive, and if car B travels 30 miles per hour faster than car A, how long did it take car B to travel the route?
A. 1 hour and 30 minutes
B. 2 hours
C. 2 hours and 30 minutes
D. 3 hours
E. 3 hours and 30 minutes
A. 1 hour and 30 minutes
B. 2 hours
C. 2 hours and 30 minutes
D. 3 hours
E. 3 hours and 30 minutes
Source: McGraw-Hill's GMAT
04 Sep 2019, 07:40
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Distance = Speed x Time
Car A:
Distance = 140 miles
Time: 3 1/2 hours or 7/2 hours
Speed = 140/7/2 = 40 miles / hr
Car B = Speed of Car A + 30 miles / hr = 70 miles / hr
Therefore, Time = Distance/Speed = 140/70 = 2 hours
Choice B
Posted from my mobile device
Car A:
Distance = 140 miles
Time: 3 1/2 hours or 7/2 hours
Speed = 140/7/2 = 40 miles / hr
Car B = Speed of Car A + 30 miles / hr = 70 miles / hr
Therefore, Time = Distance/Speed = 140/70 = 2 hours
Choice B
Posted from my mobile device
04 Sep 2019, 07:59
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SajjadAhmad
Cars A and B travel the same 140-mile route. If car A takes 3 hours and 30 minutes to complete the drive, and if car B travels 30 miles per hour faster than car A, how long did it take car B to travel the route?
A. 1 hour and 30 minutes
B. 2 hours
C. 2 hours and 30 minutes
D. 3 hours
E. 3 hours and 30 minutes
A. 1 hour and 30 minutes
B. 2 hours
C. 2 hours and 30 minutes
D. 3 hours
E. 3 hours and 30 minutes
Source: McGraw-Hill's GMAT
Speed of Car A is 140/(7/2) = 40
Speed of Car B is = 70
So, Time required to travel the route will be 140/70 = 2 Hours., Answer must be (B)
