Question

Correct Answer Will get Brainliest

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.

9 ft x 9 ft

Answer 1

Answer:48.6

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 81 square feet

45(81)/75=48.6

hope this helped and I hope you get a correct answer :D

Answer 2

Answer:

48.6 minutes

Step-by-step explanation:

First we must identify the area of the given wall :

A = L * W

A = 9 * 9

81 = 9 * 9

$81ft^2$

Now we know that we can paint 75 square feet every 45 minutes so we must use proportion to find out how long it'll take you.

$\frac{75}{45} *\frac{ft^2}{min}$

=

$\frac{81}{x}$ $\frac{ft^2}{min}$

x = 45(81) / 75

x = 3645 / 75

x = 48.6 minutes