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 of his son. What is their present age?
A
56 and 14 years
B
40 and 10 years
C
32 and 8 years
D
36 and 9 years
Correct Answer: 36 and 9 years
Let, Father’s age be F and son’s age be S F = 4S and, (F - 6) = 10(S - 6) 4S - 6 = 10S - 60 6S = 54 S = 9,F = 36