Question

The length of a room is 3 times of its height and breath is 3/2 times its height. The cost of whitewashing the walls at the rate of 150 rupees per meter square is 216 . Find the dimension of room.

Answer 1

Let height = x
Length =3 of x
Breadth =3/2 of x
Cost of white washing = area ×rate
=
$3 \times x \times 3 \div 2 \times x \times x \times 150 = 216$