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Jon recently drove to visit his parents who live 528 miles away. On his way there his average speed was 14 miles per hour faster than on his way home (he ran into some bad weather). If Jon spent a total of 22 hours driving, find the two rates.

 Jul 22, 2020
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[528 / (S + 14) + 528 / S] = 22, solve for S

 

S = 42 mph - average speed comming back

42 + 14 =56 mph - average speed driving to parents.

 Jul 22, 2020

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