As part of her training routine for​ basketball, Shaylle alternates between cycling and running for exercise. She cycles at a rate of 14 mph and runs at a rate of 8 mph. If she spends 4.5 hours exercising and covers a total of 51 miles, how much time did she spend on each​ exercise?

1 answer

c + r = 4.5

14c + 8r = 51

solve by substitution or elimination