Problema Solution
Rico can drive 3 times as fast as pablo can ride his bicycle. if it takes pablo 3 hours longer than rico to travel 72 miles, how fast can pabloi ride his bicycle?
Answer provided by our tutors
let
r = the rate of Rico
p = the rate of Pablo
Rico can drive 3 times as fast as Pablo can ride his bicycle
r = 3p
it takes Pablo 3 hours longer than Rico to travel 72 miles
72/p = 3 + 72/r
plug r = 3p into the last equation
72/p = 3 + 72/(3p)
by solving we find
p = 16 mph
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Pablo rides his bicycle with a rate of 16 miles per hour.