Question

Mr. Painter has moved into a new house. He wants to install carpet in the playroom. The floor is 15ft long and 13 feet wide. One roll of carpet covers 55 square feet. How many rolls of carpet does he need to buy?

Answer 1

Number of rolls to be purchased = 4

Explanation:

Mr. Painter wants to install a carpet in the playroom having dimensions as 15 ft by 13 ft.

Area of the playroom's floor = Length × Width

= 15 × 13

= 195 square feet

∵ 55 square feet of the floor is covered by number of rolls = 1

∴ 1 square feet area will require the number of rolls =
`(1)/(55)`

∴ 195 square feet will require the number of rolls =
`(195)/(55)`

= 3.55

Therefore, number of rolls to be purchased = 4