If 25 metres of cloth costs Rs. 227.50, then
(i) What will be the cost of 40 metres of the same type of cloth?
(ii) What will be the length of the cloth bought for Rs 810?
According to the question,
∵ 25m of cloth cost = ₹ 337.50
∴ 1m of cloth cost = ₹ 
a) Cost of 40 m of the same type of cloth = 
b) The length of cloth bought for ₹ 810 = 
79