Yanira = Y
Tim = T
Hannah = H
-----------------
Therefore:
Y=T+3
Y=2H
T=H+2
---------------
Now, we know that:
Y=T+3
But we also know that:
T=H+2
Therefore:
Y=(H+2)+3
Y=H+5
-------------------
Now we can combine the equations:
Y=H+5
Y=2H
Therefore:
2H=H+5
2H-H=5
So, H=5.
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If H=5,
Y=2H=2*5=10
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If H=5,
T=H+2=5+2=7
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Answers:
Yanira is 10 years old.
Tim is 7 years old.
Hannah is 5 years old.
