The sum of the present ages of a father and his son is 60 years. Six years ago, father's age was five times the age of the son.
After 6 years, son's age will be
A12 years
B14 years
C18 years
D20 years
Ans 1:
Class : Class 10
LET THE AGE OF FATHER AND SON BE X AND Y RESPECTIVELY
X+Y=60......(1)
AGE OF FATHER 6YEARS AGO WAS
X-6=5(Y-6).....(2)
X-6=5Y-30
BY USING ELIMINATION METHOD IN EQ (2)&(1) RESPECTIVELY WE GET
Y=14YEARS AND X= 44YEARS
THUS AFTER 6 YEARS THE SONS AGE WOULD BE 20 YEARS.