Mixtures and Alligation

The ratio of white paint and tarpin oil in two different buckets is 2 : 3 and 4 : 5. In what ratio are we required to mix the mixtures of two buckets in order to get a new mixture which has the ratio of tarpin oil and white paint equal to 7 : 5?

Krishna bought some wheat at Rs. 10 per kilogram and mixes it with 2 kg wheat bought from a ration shop at the rate of Rs. 8 per kilogram. He mixes the two and sells at Rs. 11 per kilogram. If he makes 25% profit, how much wheat did he buy at Rs. 10/kg?

A 45 litre mixture of spirit and water contains 20% of water in it. How much water must be added to it to make water 25% in the new mixture?

A mixture of buttermilk and water has 25% water and 75% is buttermilk, and total amount of mixture is 72 L. How much water should be added so that new mixture contains 40% of water in it?

Two mixtures contain spirit and water in the ratios 3 : 5 and 7 : 4. If 24 litres of the first mixture and 44 litres of the second mixture are mixed with 25 litres of spirit, then what is the ratio of spirit to water in this new mixture?

It is given that 100 kg of one mixture is mixed with 180 kg of another mixture. The first mixture is made from two components 'A' and 'B' in the ratio 3 : 7 and the second mixture is made from the same two components 'A' and 'B' in the ratio 4 : 5. What is the ratio of 'B' to 'A' in the mixture?

Two drinks P and Q are made of lime and water both. The ratio by volume of lime to water in drink P is 8 : 1 and in drink Q is 2 : 7. It is found that, if drinks P and Q are mixed in a certain ratio, the volumes of lime and water in the resultant drink are also in the same ratio. Calculate the required ratio.

The ratio of milk to water in 48 litres of a mixture is 7 : 5. How much milk is required to be added to this mixture so that the ratio may become 3 : 2?

How much water (in litres) should be added to a 7.5-litre mixture of acid and water with acid-to-water ratio as 1 : 2, such that the resultant mixture has 20% acid in it?

A grocer mixes coffee powder of 2 types, one of which is priced at Rs. 60 and the other at Rs. 90. What should be the ratio of combining the two, to sell the blended mix coffee powder of the two types at Rs. 80?

A beaker contains acid and water in the ratio 1 : x, respectively. When 300 ml of the mixture and 50 ml of water are mixed, the ratio of acid to water becomes 2 : 5. What is the value of x?

In a laboratory, two bottles contain mixture of acid and water in the ratio of 2 : 5 in the first bottle and in the ratio of 7 : 3 in the second. The ratio in which the contents of these two bottles should be mixed such that the new mixture has acid and water in the ratio of 2 : 3 is

A mixture is composed of 11 parts of pure milk and 2 parts of water. If 35 litres of water were added to the mixture, then the new mixture would contain twice as much pure milk as water. How much pure milk (in litres) does the original mixture contain?

A liquid costing \$12 per litre is sold at \$13.75, so as to make a profit of 25% after addition of water to it. Find the ratio of liquid to water added.