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Total age of 22 girls = 22 × 40 = 880 years If the age of two more girls is added the average decreases by 2.5 years, ∴ Total age of 24 girls = 37.5 × 24 = 900 Now, the sum of the age of new girls = 900 – 880 = 20 years
If 50L of liquid containing 20% spirit is added with 15L of water then what would be the percentage of spirit in the resulting mixture?
In a mixture, the quantity of sugar is 25% of the quantity of water. On removing 70 litres mixture and adding 10 litres each of sugar and water, the qua...
A container holds 260 liters of a solution of milk and water mixed in the ratio of 7:6 respectively. ‘x’ liters of this solution is drawn out and re...
A 280 ml mixture is composed of milk and water in the ratio 11:9. If an equal amount 'x' ml of both milk and water is added, the new ratio of milk to wa...
A fuel tank at a depot has a capacity of 500 liters. The attendant sells 50 liters of diesel to one customer and then refills the...
A mixture of 40 litres of milk and water contains 10% water. How much water should be added to it to increase the percentage of water to 25% ?
A milkman mixed milk and water in an empty container in the ratio 16:11. The quantity of milk mixed was bought by the milkman at the rate of Rs. 34/litr...
400 litres of mixture X contains acetone and glycerine in the ratio 11:14, respectively. 100 litres of the mixture is withdrawn and labelled as mixture ...
A 360-liter mixture consists of milk and water in a 5:4 ratio. If 7.5% of the mixture is removed and replaced with the same amount of water, what is the...
380 ml of a mixture contains milk and water in the ratio of 9 respectively. If 60 ml of water and 70 ml of milk are added into it, then the ratio of mil...
