@vishiac In a mixture of 40 L, the ratio of milk and water is 4 : 1. If some quantity of mixture taken out and then 4 L of milk and 4 L of water is added to the mixture then the ratio of milk and water become 8 : 3. Find the quantity of mixture which was taken out initially ? (a) 10 L (b) 15 L (c) 12 L (d) 18 L (e) None of these
Two pipes A and B connected to the tank. A can fill 80% of the pure milk in 7 hours while B can fill 90% of the pure milk in 3 hours. What will be the purity of the milk in tank when two pipes are opened together in empty tank?