Use a system of linear equations to solve the problem.Molly is training for a biathlon. Each weekend she bicycles and runs to prepare for the race. She cycles at a rate of 15 mph and runs at a rate of 3 mph. If she spends 5 hours bicycling and running and covers a total of 51 miles, how much time did she spend on each?
A. Bicycling: 2 hr, Running: 3 hr
B. Bicycling: 4 hr, Running: 2 hr
C. Bicycling: 3 hr, Running: 2 hr
D. Bicycling: 3 hr, Running: 4 hr
Answer: C
Mathematics
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