At present, father’s age is 4 times more than that of his son. 6 years ago father’s age was 10 times more than that of his son. What is the present age of father and son?
সমাধান
সঠিক উত্তর: Option A
F = 4 S
(F-6) = 10(S-6)
=> 4S - 6 = 10S - 60
=> 6S = 54
S = 9, F = 36