1. The ratio of bronze and silver In an alloy is 5 : 2. If 1.50 kg of silver is mixed in 21 kg of alloy, then find the new ratio of bronze and silver in the alloy.

2. A and B are solutions of acid and water. The ratios of water and acid in A and B are 4 : 5 and 1 : 2 respectively. If x liters of A is mixed with y liters of B, then the ratio of water and acid in the mixture becomes 8 : 13 What is x : y?

3. A shopkeeper wants to mix two varieties of tea at a cost of Rs. 50 per kg and Rs. 90 per kg to get the mixture worth Rs. 75. In what ratio should he mix both varieties.

4. Sugar worth rupee 40 rupees per kg and 50 rupees per kg mixed with a third variety in the ratio 1 : 2 : 4. If mixture is worth 70 rupee per kg then what is the price of third variety of sugar per kg?

5. A bottle of capacity 80 litres contains alcohol and spirit in the ratio 7 ∶ 3. How much spirit must be added to the mixture, so that the ratio of alcohol and spirit become 2 ∶ 1?

6. A vessel has 30 litres of mixture water and milk. The second vessel has 20 litres of mixed milk and water are in ratio 3 : 2 respectively. How much milk present in the first vessel if the water present in the first vessel is 50% more than the milk present in the second vessel?

7. A mixture of 80 liters of wine and water contains 60 percent wine. How much water must be added to make it 50 percent wine in the new mixture?

8. 15 liters of a mixture contains alcohol and water in the ratio of 1 : 4. If 3 liters of water is mixed in it, the percentage of alcohol in the new mixture will be:

9. In a mixture of 70 kg of rice and wheat, 40% of mixture is wheat, what quantity of wheat must be added to the mixture so that concentration of rice becomes 30% in the mixture?

10. A mixture of 70 liters of wine and water contain 10% water. How much more water should be added to the mixture to make 37% water in the resulting mixture?

11. The ratio of syrup and water in a mixture of 40 liters is 5 : 3, then what amount of water is added, so that the ratio of the mixture becomes 5 : 6?

12. Sugar of Rs. 100/kg and Rs. 120/kg are mixed in the ratio of 2 : 3. Find the price of mixture per kg

13. If a person buys 8 litres of oil but a dishonest shopkeeper mixed low-quality oil with high-quality oil in the ratio 3 ∶ 5. The price of high-quality oil is Rs.60/litre and that of low quality is Rs.20/litre, then what is the profit% of the shopkeeper if he charged the price of high-quality oil?

14. There is 65% alcohol in 40 liter mixture of alcohol and water. Find the quantity of water in the mixture?

15. Alloys A and B contain copper and zinc in the ratio 1: 3 and 3 : 5, respectively. In what ratio A and B be mixed to get a new alloy containing copper and zinc in the ratio 1 : 2?

16. The ratio of alcohol and water in a solution of 70 liters is 5 ∶ 2. How much water should be added to the solution to reverse the ratio?

17. Alloy A contains iron and copper in ratio 4 : 5. Alloy B contains iron and copper in ratio 3 : 4. If 45 kg of alloy A and 63 kg of alloy B are mixed, then what is the final ratio of copper and iron?

18. Two alloys A and B contain copper and zinc in the ratio 7 : 2 and 5 : 3 respectively. How many kg of A and B must be melted in order to get an alloy of 44 kg containing copper and Zinc in the ratio 3 : 1?

19. Ratio of milk and water in two mixtures A and B is 3 : 2 and 4 : 3 respectively. If A and B are mixed in the ratio of 1 : 2, then what is the ratio of milk and water in final mixture?

20. The ratio of the milk and water in the mixture is 8 ∶ 3. The quantity of the mixture is 88 litre. If 44 litres of the mixture is taken out then what is the quantity of the milk left in the mixture?