Answer:
20 minutes
Explanation:
From the given information, we can see that:
- 4 minutes burns 20 calories, and
- 8 minutes burns 40 calories.
We can see the pattern that minutes x 5 = number of calories.
4*5 =20
8*5=40
So for the last line, what we need is a number which multiplied by 5 gives us 100. Let that number be
:
![x*5=100\\5x=100\\x=(100)/(5)=20](https://img.qammunity.org/2020/formulas/mathematics/middle-school/f2rn07qt9c6rwiiitky6de545zpsavj8y7.png)
So you would need to run 20 minutes.