Problema Solution
A tourist can bicycle 28 miles in the same time as he can walk 8 miles. If he can ride 10 mph faster than he can walk, how much time should he allow to walk a 35-mile trail?
Answer provided by our tutors
let
v = the average speed of walking
v + 10 = the average speed of bicycling
since speed = distance/time follows time = distance/speed
v/8 = (v + 10)/28
by solving we find:
v = 4 mph
click here to see the step by step solution of the equation:
35 miles the tourist will walk in: 35/4 = 8 3/4 hr = 8 hr 3*40/4 min = 8 hr 12 min.