How much water must be added to a bucket which contains 40 liters of milk at th

Question

How much water must be added to a bucket which contains 40 liters of milk at the cost price of Rs.3.50 per liter so that the cost of milk reduces to Rs.2 per liter?

Options:

A . 25 liters

B . 28 litres

C . 30 liters

D . 35 liters

Answer: Option C

Total cost price =Rs(40 x 7/2) = Rs.140 Cost per litre =Rs.2, Total quantity = 140/2 = 70 Litres.
Water to be added =(70-40) =30 Litres.

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