45. Mr. Green is buying mulch for his triangular-shaped garden shown below. When the mulch is uniformly spread 2 inches deep, each bag of mulch will cover 12 square feet. Mr. Green plans to uniformly spread his mulch 3 inches deep. Which of the following is closest to the number of bags of mulch Mr. Green will need for his garden?

Answer and Explanation

Your Answer is

Correct Answer is B

Explanation

A bag of mulch can cover 12 square feet if spread 2 inches deep, then spread 3 inches deep to cover 2×12÷3=8 square feet. The garden area is 26×10÷2 = 130 square feet. The quantity of mulch required is: 130÷8 = 16.25, that is, 17 bags are required.