Christina wants to compute the cost of tiling the floor in her bathroom.

Question

Christina wants to compute the cost of tiling the floor in her bathroom. The floor measures 7 feet 6 inches by 8 feet 10 inches. Each tile covers 1 square foot. A box of 45 tiles costs $35.95. 

How many boxes must she buy to cover the floor?

A. 1 box

B. 2 boxes

C. 3 boxes

D. 4 boxes

Answer 1

first you need to get common units

7 ft 6 inches = 7.5 ft

8 ft 10 inches = 8.83 ft

now find the area

7.5 x 8.83 = 66.25 sq ft

since a tile is 1 sq ft we need 67 tiles

there are 45 tiles in a box, so we need 2 boxes