Question 862635: Mr.Smith traveled to a city 350 miles from his home to attend a meeting. Due to car trouble, his average speed returning was 7 mph less than his speed going. If the total time for the round trip was 15 hours, at what rate of speed did he travel to the city? (Round answer to nearest 10th)
Answer by richwmiller(17219)   (Show Source):
You can put this solution on YOUR website! r*a=d,
(r-7) *(b)=d,
d=350,
a+b=15
a=6.9, b=8.1, d=350,
r=50.4
a~~6.94063, b~~8.05937, d~~350., r~~50.4277
to the nearest tenth as requested
r=50.4
43.43*8.059=350.00
6.94+50.43=349.98
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