Q1. A milkman mixes water in pure milk and sells it at cost price of the milk If he makes a profit of 20 in what ratio does he mix water and pure milk

Q2. A 132 litres of mixture contains milk and water in the ratio 5 7 How much milk need to be added to this mixture so that the new ratio is 13 11 respectively

Q3. How much chicory at Rs 5 a kg should be added to 20 kg of coffee at Rs 12 a kg so that the mixture be worth Rs 7 50 a kg

Q4. In an alloy zinc copper are in the ratio of 1 1 In the second alloy the same element are in the ratio 3 5 If these two alloys be mixed to form a new alloy in which two elements are in the ratio 2 3 find the ratio of these two alloys in the new alloy

Q5. A 30 litres milk water mixture contains 50 milk How much pure milk need to be added to this mixture to make the mixture 30 water