Question

The cost of preparing the walls of a room 12m long at the rate of 1.35 per meter square is 340.25 and the cost of matting the floor at 85 paise per meter square is 91.80find the height of the room

Answer 1

Answer:

Step-by-step explanation:

given

length of room

=12m

cost of preparing per m^2= 1.35 rs

total cost=340.25

340.25=lh×1.35

340.25÷1.35=12×h

252.04÷12=h

21= height of room

rate of matting=

80p

0.85rs

total cost=91.80rs

91.80rs=lb×0.85

91.8=12×0.85×b

91.8÷10.2=b

9m= breath