# How many minutes will there be between the arrival times of the two cars?

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Car A and car B set off from the same point, at the same time, to travel the same 115 mile journey.

Car A travels at 55 mph and car B travels at 35 mph.

How many minutes will there be between the arrival times of the two cars?

posted Jan 12

Time taken by car A = 115/55 = 23/11 hr
Time taken by car B = 115/35 = 23/7 hr
Time difference = 23/7 - 23/11 = 23(11- 7)/77
23×4/77 = 92/77 hr = 1hr 12 minutes 30 seconds. = 72 minutes 30 seconds = 72.5 minutes.

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