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.

7 ft ×​ 6 ft

Answer 1

25.2 minutes

Explanation:

Answer 2

25.2 minutes

Explanation:

step 1

Find the area of the given wall

`A=(7)(6)=42\ ft^2`

step 2

we know that

You can paint 75 square feet of a surface every 45 minutes

so

using proportion

Find out how long it takes you to paint a surface area of 42 square feet

`(75)/(45)\ (ft^2)/(min)=(42)/(x)\ (ft^2)/(min)\\\\x=45(42)/75\\\\x=25.2\ min`