Given:
I: My age.
S: My son.
G: My grandson.
If you add all our ages together, the sum is 100 years.
SOLVING:
I + S + G = 100 ===> First equation.
S = 7G ===> Second equation.
I = 12G ===> Third equation.
We replace the second equation and the third ecuation in the first equation:
12G + 7G + G = 100
20G = 100
G = [tex] \frac{100}{20}[/tex]
G = 5 years old. ===> My grandson.
S = 7(5)
S = 35 years old. ===> My son.
I = 12(5)
I = 60 years old. ===> My age. SOLUTION
TESTING:
[tex]5+35+60=100[/tex]
[tex] \boxed{100}=\boxed{100}\quad\checkmark\ The\ value\ is\ correct.[/tex]
GOOD LUCK...!!!
