Answer:
batman is 28 years old and robin is 40 years old
Explanation:
lets think that
robins age is x
batmans age is x-12
so the equation is
x +x-12 =68
2x-12=68
2x= 68 +12
2x=80
x=80÷2
x=40
x -12= 40-12
28
40+28=68
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