SOLUTION: the distance of their ages is 5. Four years ago, she is 12 years old. How old is she now if she is younger than her?

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Question 1058444: the distance of their ages is 5. Four years ago, she is 12 years old. How old is she now if she is younger than her?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Let a = the oldest girl, b is the younger
:
the difference of their ages is 5.
a - b = 5
:
Four years ago, she is 12 years old.
Therefore she (a) is 16 yrs old now
:
How old is she now if she is younger than her?
b = a - 5
b = 16 - 5
b = 11 yrs old is the younger