A = 6 + B
A + B = 40
6+B + B = 40
2B = 40-6 = 34
B =34/2 = 17 years old brother
A =17+6 = 23 years old for Annie
23+17 =40
A = 6 + B
A + B = 40
6+B + B = 40
2B = 40-6 = 34
B =34/2 = 17 years old brother
A =17+6 = 23 years old for Annie
23+17 =40
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