Problema Solution
A student walks and jogs to college each day. She averages 5km/hr walking and 9km/hr jogging. the distance from home to college is 8km , and she makes the trip in one hour. How far does the student jog?
Answer provided by our tutors
5km/hr (1-x) + 9km/hr (x) = 8km/hr x - the time she is jogging
4km/hr *x = 3km/hr
x = 0.75hr
45 minutes!
(makes sense, 8km/hr is 3/4 of the way between 9km/hr and 5 km/hr)