The cost of carpeting a room 15 m long with a carpet 75 cm wide, at RS. 70 per meter, is RS. 8400. The width of the room is
Given:
Length of room = 15 m
Width of carpet = 75 cm = 0.75 m
Rate = Rs 70
Total cost = Rs 8400
Now,
= 120 m
Therefore,
Area of carpet = Length of carpet × Width of carpet
= 120 m × 0.75 m = 90 m2
We know that,
Area of room = Area of carpet = 90 m2
Now,
Area of room = Length of room × Width of room
⇒ 90 m2 = 15 m × Width of room
⇒ Width of room = 6 m