SOLUTION: pedro can drive 4 times as fast as luis can ride his bicycle. if it takes luis 3 hrs longer than pedro to travel 36 miles, how fast can luis ride his bicycle?

Question 731514: pedro can drive 4 times as fast as luis can ride his bicycle. if it takes luis 3 hrs longer than pedro to travel 36 miles, how fast can luis ride his bicycle?

Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Luis's speed in mi/hr
= Pedro's speed in mi/hr
Let = Pedro's time in hrs to travel 36 mi
= Luis's time in hrs to travel 36 mi
-------------
Pedro's equation:
(1)
Luis's equation:
(2)
--------------------
(1)
(2)
(2)
(2)
(2)
Luis's speed is 9 mi/hr
check:
(1)
(1)
(1) hr
and
(2)
(2)
(2)
(2) hr
OK

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