SOLUTION: jake rode his bike for 5 miles. he drove back at a speed 10 times as fast. the whole trip was 2 hours. How fast was he traveling?

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Question 553319: jake rode his bike for 5 miles. he drove back at a speed 10 times as fast. the whole trip was 2 hours. How fast was he traveling?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
going speed = x
returning speed = 10 x
distance = 5 miles
total time =2
t=d/r
5/x + 5/10x= 2
multiply by 10x
50+5=20x
55=20x
x=55/20
x=2.75 mph while going
10 times 2.75 returning