1] The fathers age was 5 times his son's age 5 years ago and will be 3 times son's age after 2 years. The ratio of their present ages is
a] 5:2 b]5:3 c]10:3 d]11:5

let son's age be 5 years ago be x and father's age 5x
After 5 years [i.e. present age] ,sons and father's age x+5 and 5x+5
After 2 years
3(x+5+2) = 5x+5+2
3x+15+6 = 5x+7
         14  =  2x
             x= 7 years
present age = x+5 = 12 and 5x+5 = 40
ratio = 40:12 = 20:6 = 10:3

2] The age of a father 10 years ago was thrice the son's age.10 years hence the fathers age will be twice that of his son.The ratio of their present ages is
a] 8:5 b]7:3 c]5:2 d]9:5

3] 1year ago a father was four times as old as his son.In 6 years timehis age exceeds twice his son's age by 9 years.Ratio present ages is
a] 13:4 b]12:5 c]11:3 d]9:2

4] 1year ago pramila was four times as old as her daughter.In 6 years time pramila's age exceeds her daughter's age by 9 years.Ratio present ages is
a] 13:4 b]12:5 c]11:3 d]9:2