Asked by Molly

Mike drove to a friends house at a rate of 40 mph he returned by the same route at 45 mph The driving time round trip was 4 hours. write and solve an equation to find the distance Mike traveled

Answers

Answered by Steve
since time = distance/speed,

d/40 + d/45 = 4
d = 84.7 miles
round trip = 169.4 miles

check:
84.7/40 = 2.118
84.7/45 = 1.882
total: 4.000 hours
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