Question 30898
Son's age = 3+x
Daugther's age = x
In 17 years son's age = x+17+3-->x+20


Equation:
<font color = red>2(x)=x+20
</font>2x=x+20
x=20


20+3=23
Hence, the age for the son is 23 years and the age for the dauther is 20 years.
Paul.