Question

You can paint 75 square feet of a surface every 45 minutes. Determine how long it takes you to paint a wall with the given dimensions.

8 ft x 5 ft

Answer 1

It will take you 24 minutes to paint the wall with dimensions 8 ft x 5 ft.

Explanation:

The total area of the wall is:

8 ft x 5 ft = 40 square feet

To paint 75 square feet takes 45 minutes, so to paint 1 square foot takes:

45 minutes ÷ 75 square feet = 0.6 minutes/square foot

Therefore, to paint 40 square feet will take:

40 square feet x 0.6 minutes/square foot = 24 minutes