Question 1172651
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Hi  
Let x represent Alexis' age ..12 years ago
and 3x  Gerardo's age ..12 years ago
12 years ago... 104 - 12 = 92
x + 3x = 92
4x = 92
x = 23  Alexis' age 12 years ago
23+12 = 35 Alexis' age NOW
35 + C(now) = 104
C(now)= 69  Gerardo's age NOW
CHECKING our answer***
35 + 69 = 104
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