Gary exercises 1.75 hours on mondays, wednesdays, and saturdays. how many weeks will it take gary to exercise a total of 21 hours?

For this case, the first thing we must do is define variables.

We have then:

x: number of days

y: total hours

The equation modeling the problem is given by:

Substituting for y = 21 hours we have:

From here, we clear the value of x:

It takes Gary 12 days to train 21 hours.

We know that Gary trains 3 days a week.

Therefore, the number of weeks is given by:

it will take Gary 4 weeks to exercise a total of 21 hours

the correct answer is 1: 2

step-by-step explanation:

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