What is the value ratio of ₹5, ₹2, and ₹1 coins in a bag if the total number of coins is 144 and the value ratio is 10:6:7? Find the number of ₹2 coins.
A mixture contains alcohol and water in the ratio 4:3. If 5 liters of water is added to the mixture, the ratio becomes 4:5. Find the initial quantity of alcohol.
The salaries of A, B, and C are in the ratio 2:3:5. If the increments of 15%, 10%, and 20% are allowed respectively in their salaries, then what will be the new ratio of their salaries?
Two alloys contain zinc and copper in the ratios 2:3 and 4:1. In what ratio should these two alloys be mixed to form a new alloy containing zinc and copper in the ratio 1:1?