cheer04 cheer04

20-08-2014
Mathematics

Answered

MICHAEL and Kevin are running. Kevin gets a 3 mile head start and runs at a rate of 5.5 miles per hour. Michael runs at a rate of 7 miles per hour. How many hours will it take Michael to catch up with Kevin?

Answer :

FancyDuck FancyDuck

20-08-2014

5.5x + 3 = y
7x =y

5.5x + 3 = 7x (-5.5x both sides)

3 = 1.5x (÷1.5 both sides)

X = 2

Michael takes two hours

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