Question

Andy painted 400 square feet in 3 hours. At that rate, how many cars could they wash in 7 hours? *

Answer 1

It will take 5.4 hour to paint 720 square feet

Explanation:

The question should be like this"Andy painted 400 square feet in 3 hours. How long would it take him to paint 720 square feet?"

In 3 hours = 400 square feet is painted

1 square feet is painted in
`(3)/(400)\ h`

To find time to paint 720 square feet multiply the above term by 720 as follows :

`720\ ft^2=(3)/(400)* 720\ h\\\\=5.4\ h`

So, it will take 5.4 hour to paint 720 square feet.