How much water must be added to 60 litres of milk at `1 1/2` litres for Rs 20 so as to have a mixture worth Rs `10 2/3` a litre?

How much water must be added to 60 litres of milk at 1(1)/(2) litres for Rs20 so as to have a mixture worth Rs 10(2)/(3) a litre?

How much water must be added to a cask contains 45 litres of milk at cost price of Rs 4 per litre so that cost of milk reduces to Rs 3 per litre?

How much Pepsi at Rs. 6 a litre is added to 15 litre of 'dew' at Rs. 10 a litre so that the price of the mixture be Rs. 9 a litre?

How much Pepsi at rs 6 a litre is added to 15 litre of 'dew' at rs 10 a litre so that the price of the mixture be rs 9 a litre?

A solution of 150 litres contains 60% of milk and the rest is water. How much water must be added to the above about solution such that the resulting mixture contains 50% of water (in litres) ?

The owner of a milk store finds that, he can sell 980 litres of milk each week at Rs 14/litre and 1220 litres of milk each week at Rs 16 / litre. Assuming a linear relationship between selling price and demand, how many litres could he sell weekly at rs 17/litre