Question

Amy used `3` gallons of paint to cover `2,100 ft^2` of wall space inside her house. How much wall space can she paint with `7` gallons?

Answer 1

`4900ft^2`

Explanation:

If `3` gallons of paint were used for `2100ft^2` of wall space, `1` gallon of paint would be used for one third that wall space. This can be written as:

`x=2100/3`

`x=700`

Hence, `1` gallon of paint can cover `700ft^2` of wall space.

To determine the amount of wall space (`y`) that can be covered with `7` gallons of paint, we can write:

`y=700xx7`

`y=4900`