The cost of preparing the walls of a room 12 m long at the rate of Rs. 1.35 per square metre is Rs. 340.20 and the cost of matting the floor at 85 paise per square metre is Rs. 91.80. Find the height of the room.

Question

Philoid · Accepted Answer

Given,

Length of room = 12 m

Let width of room = b metre

Let height of room = h metre

Now,

Area of floor = 12b m²

Cost of matting floor @rate 85 paise per square metre = Rs.91.80

=

Breadth of room = 9 m

Area of 4 walls =

Cost of preparing walls at rate Rs.1.35 per square metre = Rs.340.20

=

Height of room = 6 m