Question

3) The ratio of the lenght to breadth of a lawn is 3:5. It costs ruppes3200 to fence it at the rate of ruppes2a metre What would be the cost of developing the lawn at the reate of ruppes10 per squaree metre.​

Answer 1

Let length and breadth = 3x and 5x

2(3x+5x) = 1600

8x = 800

x = 100

So, length = 300 and width = 500

Area = 150,000

Cost = (150,000) 10

ANs = 15,00,000