Question

when amy exercises in her fitness center for i hour she burns a total of475 calories. if she bums 9 calories a minute jogging on the treadmill and then burns 6.5 calories a minute pedaling on the stationary bicycle, how many minutes of the hour does she spend exercising on the bicycle?

Answer 1

The number of hour spent by Amy on exercising on the bicycle is 26 minutes of an hour.

What is defined as the multiplicative distributive law?

• According to the Distributive Law, multiplying a number by the a collection of numbers added around each other is equivalent to doing each multiplication individually.

For the given question;

Amy works out in her fitness center for an hour and burns 475 calories.

If she burns 9 calories per minute while jogging on the treadmill and 6.5 calories per minute while pedaling just on stationary bicycle,

Let 'x' be the hour she spend exercising on the bicycle.

Thus,

6.5x + 9(60 - x) = 475

Use multiplicative distributive law.

6.5x + 540 - 9x = 475

Simplifying,

-2.5x = 475 - 540

x = 26

Thus, the number of hour spent by Amy on exercising on the bicycle is 26 minutes of an hour.

To know more about the multiplicative distributive law, here

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