13. The ratio of the father�s age to the son�s age is 4:1 The product of their ages is 196. The ratio of their ages after 5 years will be:

14. The ratio of Laxmi�s age to the age of her mother is 3:11. The difference of their ages is 24 years. The ratio of their ages after 3 years will be:

15. Pushpa is twice as old as Rita was tow years ago. If the difference between their ages be 2 years how old is Pushba today?