Several litres of acid were drawn off from a 54 L vessel full of acid and an equal amount of water is added. Again the same volume of the mixture was drawn off and replaced by water. As a result, the vessel contained 24 L of pure acid. How much acid was drawn off initially?

Father’s age is four times the age of his elder son and five times that of his younger son.When the elder son has lived to three times his present age, then father’s age will exceed twice that of his younger son’s by 3 years. What is the father’s age?

A, B, C enter into a partnership. A contributes onethird the whole capital while B contributes as much as A and C together contribute. If the profit at the end of the year is Rs. 84,000, how much would each receive