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

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