The sum of the present age of raji's and her son is 70 years. 15 years ago raji's age was 3 times of her son. Then find the present age of raji's son?
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let raji's age be x
and her son age be y
x+y=70 eq1
x-15=3(y-15)
x=15 +3y-45
30=3y-x eq 2
from eq1 and eq2
y =25
x=45
and her son age be y
x+y=70 eq1
x-15=3(y-15)
x=15 +3y-45
30=3y-x eq 2
from eq1 and eq2
y =25
x=45
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