Question

A milkman pays tk.6.40 per liter of milk.He adds water and sells the mixture at tk.8 per liter.By doing this,he makes 37.5% profit.Find the proportion of water to milk received by the customers?

Answer 1

1 : 10

Explanation:

Let :

Water = x

Milk = y

Purchase = 6.4 * y = 6.4y

Sales = 8(x + y)

Profit accrued = 37.5%

Sales = profit made from sales

8(x + y) = 6.4x * (100%+37.5%)

8(x + y) = 6.4x * 1.375

8x + 8y = 8.8x

8y = 8.8x - 8x

8y = 0.8x

y/x = 8/0.8

y/x = 10 / 1

y : x = 10 : 1