CAPF | Elementary Mathematics | Problem Based on Ages

Ratio of age of the two persons is 5:9 and one of them is 40 years older than the other find the sum of their ages?

Two years ago, the age of A was three times the age of B . If B is currently 9 years old, then after how many years, the age of A will be double of the age of B?

One year ago, a father was four times as old as his son. After six years his age exceeds twice his son’s age by 9 years. The ratio of their present age is

One year ago, a father was four times as old as his son. After six years his age exceeds twice his son’s age by 9 years. The ratio of their present age is

In a family, the age of father, mother, son and grandson are A, B, C and D, respectively. Given that, A - B = 3, B + C = 78, C + D = 33 and the average age of the family as 34 yr, then B - C is