Question

7. You are painting a large wall mural. The wall length is 3 times the height. The

Answer 1

The wall length is 3 times the height.

The area of the wall is 300 sq. ft.

Height H = X

Length L = 3X

Area S = H x L = X x 3X = 300

3(X x X) = 300

X x X = 300/3 = 100

X = 10

a. What are the dimensions of the wall?

Height H = X = 10 ft

Length L = 3X = 30 ft

b. If each can of paint covers 22 sq. ft?, will 12 cans be enough to cover the wall?

12 cans will cover 22 x 12 = 264 sq. ft

The mural is 300 sq. ft.

So, 12 cans is not enough. You will need 14 cans.