Xavier C.

asked • 09/20/18

The sum of the speeds of two trains is 727.7 miles per hour. If the speed of the first train is 8.3 mph faster than the second​ train, find the speeds of each.

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1 Expert Answer

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Nestor R. answered • 08/20/19

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Let A be the speed of Train 1 and B = A - 8.3 be the speed of the second train.


Wite an equation A + (A - 8.3) = 727.7.


2A - 8.3 = 727.7

2A = 727.7+8.3 = 736.0


Solve for A: A = 736/2 = 368 mph.

Train B travels at 368 - 8.3 = 359.7 mph.


Check: 368.0+359.7 = 727.7 mph

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