Problema Solution
An athlete running at 6 mph and later cycles at 20 mph completed a 90 mile course in six hours and 15 minuets. How far did she cycle and how far did she run
Answer provided by our tutors
d = r*t
t = d/r
d/6 + (90-d)/20 = 6.25
10d + 3(90-d) = 375
7d + 270 = 375
d = 15 miles running
75 miles cycling