SOLUTION: Pablo can drive 5 times as fast as Oscar can ride his bicycle. If it takes Oscar 4 hours longer than Pablo to travel 90 miles, how fast can Oscar ride his bicycle?

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Question 279596: Pablo can drive 5 times as fast as Oscar can ride his bicycle. If it takes Oscar 4 hours longer than Pablo to travel 90 miles, how fast can Oscar ride his bicycle?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Pablo can drive 5 times as fast as Oscar can ride his bicycle. If it takes Oscar 4 hours longer than Pablo to travel 90 miles, how fast can Oscar ride his bicycle?
Let Oscar's speed be x
Pablo's speed = 5x
t= distance /rate
90/x = oscars tiem
PAblo's time = 90/5x
90/x + 4 = 90/5x
90/x-90/5x=4
450-90 /5x= 4
360 -90=20x
270 =20x
x= 13.5 mph