SOLUTION: Tommy rode his bike to visit a friend. He traveled at 10mi/hi/ While he was there, it began to rain. His friend drove him home in a car traveling west at 100mi/h. Tommy took 1.5hou

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Question 900247: Tommy rode his bike to visit a friend. He traveled at 10mi/hi/ While he was there, it began to rain. His friend drove him home in a car traveling west at 100mi/h. Tommy took 1.5hours longer to go to his friend's than returning home. How many hours did it take Tommy to ride to his friend's house.
Answer by lwsshak3(11628) About Me  (Show Source):
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Tommy rode his bike to visit a friend. He traveled at 10mi/hr/ While he was there, it began to rain. His friend drove him home in a car traveling west at 100mi/hr. Tommy took 1.5hours longer to go to his friend's than returning home. How many hours did it take Tommy to ride to his friend's house.
let x=travel time to friend's house
distance=speed*travel time
10x=100(x-1.5)
10x=100x-150
90x=150
x=15/9=5/3
How many hours did it take Tommy to ride to his friend's house? 5/3 hr