Question

A cuboidal room is 1 and 1/2 as long again as it is broad. The cost of carpeting the room at the rate of Rs.5 per m sq is Rs.480 and the cost of papering the walls with coloured paper at the rate of Rs.3 per m sq is Rs.360. Find the dimensions of tne room .

Answer 1

Let breadth of the room be b
Let length of the room be l
and let height of the roo be h then,
Area of floor =l*b
480/5 =l*b
l*b=96 ....i
Area of 4 walls = 2*(l*h) +2*(b*h)
360/3 =2h(l+b)
h(l+b)=60 ....ii
l=(1+1/2)b ....iii

Answer 2

U need to solve that three equations

Answer 3

l = 12 m , b = 8m, h = 3m