Question

The cost of carpeting a room at Rs 90/m^2 is Rs 7200.If the length had been 5m less the cost would have been Rs 3600.Find the length and breadth of the room.

Answer 1

Step-by-step explanation:

Let the length and breadth of the room bex m

andy mrespectively.

Cost of carpeting xy m2 = Rs. 120

Cost of carpeting x(y - 4) m

= Rs (120 20) = Rs. 100

y-4

100

X(y-4)

120

xy

y

6y 24 5y

y= 24 m