Question

Rena swims everyday. She burns approximately 10.6 calories per minute when swimming and about 15 calories warming up before she swims. Write an equation to find how many minutes arena must swim to burn 205.8 calories.

Answer 1

Let t be the amount of time it takes to burn 205.8 calories, in minutes.

Our equation is 10.6*t+15=205.8.

This is because for every minute spent, 10.6 calories are burned, and 15 calories are burned no matter how long she swims. The other side is 205.8, because the total calories burned is equal to 205.8.