Question

Rolando needs to paint the exterior of his house.He calculates that he will be painting 896.4 square feet of the house .The local hardware store sells paint by gallon and each gallon will cover 61.25 square ft.About how may gallons of paint does he need to purchase?

Answer 1

He needs to paint 896.4 sqft.

We know that each gallon covers 61.25 sqft. We can write this equivalency:

`61.25\text{ sqft}=1\text{ gal}`

Then, we can calculate the gallons he need as:

`P=896.4\text{ sqft}\cdot\frac{1\text{ gal}}{61.25\text{ sqft}}=14.63\text{ gal}`

He needs 14.63 gallons, that rounded to nearest integer, represent 15 gallons.