Three glasses P, Q and R have capacities in the ratio 1: 2 : 3. All these glasses are completely filled with mixtures of milk and water. The ratio of milk to water in P is 1: 2, in Q it is 2: 3 and in R it is 3: 1. If the content of all three glasses are put into a bigger container, what will be the ratio of milk to water in the container?

In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quantity of water to be further added is:

Two alloys are both made up of copper and tin. The ratio of copper and tin in the first alloy is 1 : 3 and in second alloy is 2 : 5. In what ratio should two alloys be mixed, to obtain a new alloy su…

10 years ago the ratio of ages of Ramesh and Rajeev was 1 : 3. 5 years hence this ratio will become 2 : 3. What is the ratio of their ages at present?

A bag contains coins of Rs. 2, Re. 1 and 50 paisa in the ratio 6 : 7 : 15 respectively. If the total amount in the bag is Rs. 1590, then the number of 1 Re. coins in the bag is :

Sum of present ages of A, B and C is 92 years. If 4 years ago, the ratio of their ages were 1:2:3 respectively, find A’s present age.