The cost of carpeting a room 18m long with a carpet 75 cm wide at Tk. 50 per metre is Tk. The breadth of the room is

A 7 m

B 8 m

C 7.5 m

D 8.5 m

Correct Answer: Option C

Length of the carpet = (total cost) (Rate sm)=(8100)/(46)=180 m

Area of the room = Area of the carpet = (180*.75/100) = 135 sqm

Hence,

Breadth of the room = (area)/(length) = 135/18 = 7.5 m