the cost of carpeting a room 18 m long with a carpet 75 cm wide at 4.50 per metre is 810 . the breadth of the room is :
length of the carpet = totalcost / rate / m = ( 8100 ⁄ 45 ) m = 180 m . area of the room = area of the carpet = ( 180 × 75 ⁄ 100 ) m 2 = 135 m 2 ∴ breadth of the room = arealength = 135 / 18 m = 7.5 m answer b
divide(multiply(divide(810, 4.5), divide(75, const_100)), 18)