Question
B is 5 years older than A and A is 7 years older than C.
If the sum of the age of A and C is 21 years, then find the sum of the ages of all three.Solution
Let C’s present age be x years. So, A’s present age = (x + 7) years And B’s present age = (x + 7 + 5) = (x + 12) years According to question, => x + 7 + x = 21 => 2x = 14 => x = 7 Required total sum = x + (x + 7) + (x + 12) = 3x + 19 = 40 years
- A mixture of salt and water has a ratio of 2:1. After adding 8 liters of water, the amount of salt becomes 12 liters more than the amount of water. What wa...
- Wheat worth Rs. 25/kg and Rs. 40/kg are mixed with a third variety in the ratio 1:2:1 respectively. If the final mixture is worth Rs. 35/kg, then the price...
Mixture ‘X’ contains 50% alcohol and the rest 40 litres of water. 150 litres of mixture ‘Y’ contains alcohol and water in the ratio 5:10, respec...
In a ‘10Y’ litres of mixture of milk and water, the quantity of milk is 60%. According to which of the following statements the value of ‘Y’ wi...
- Two mixtures, P and Q, have milk-to-honey ratios of 7:5 and 8:9, respectively. When these two mixtures are combined, the total quantity of the final mixtur...
In a mixture, 25% is water and the remainder is milk. The milk is 140 liters more than the water. How much water is in the mixture?
In a mixture of 280 litres, the ratio of gold to silver is 5:3. If ‘x’ litres of silver is added to the mixture, such that the ratio of gold to silv...
660 gms mixture contains sugar and rice in the ratio of 4:7 respectively. If 30 gms of sugar and 60 gms of rice are added to the mixture, then calculate...
Quantity of water in a 320 litres mixture (alcohol + water) is 20 litres less than the quantity of alcohol in it. Find the quantity of water to be mixed...
140 litres of mixture X contains acetone and glycerine in the ratio 5:9, respectively. 70 litres of the mixture is withdrawn and labelled as mixture Y a...
