Question

A daily workout plan involves a total of 40 minutes of running and swimming. Gregory burns 20 calories per minute of running (r) and 10 calories per minute of swimming (s). Create an equation to model this scenario. *

Answer 1

Workout plan:

-40 min running and swimming

Gregory burns

-20 cal/min running (r)

-10 cal/min swimming (s)

Between runnung and swimming you have to add up to 40 min.

The total calories he wil burn is equal to the time he spends running plus the time he spends swimming, both values multiplied by the corresponding calories he is supposed to burn:

C=20r+10s

C= total calories burnt in one work out

r= total minutes he ran

s=total minutes he swam

Note: r+s cant be grater than 40min