Question

Proport

4. Andy painted 400 square
feet in 3 hours. How long
would it take him to paint
720 square feet?

Answer 1

5.25, 5/14, or 21/4 hours

Explanation:

400 700

------ = ------

3 x

Answer 2

It takes 5 minutes per square foot (400/180=5) and so 5 minutes per square for 720 squares: 720x5=3,600. 3,600 minutes is equivalent to 60 hours so it takes him 60 hours.