Question 78788
Mary is three years older than her twin brothers. Next year, the sum of the ages will be exactly 102. How old are they now.

The Work I have is:

m=3+b
m+b+b=102
3+b+b+b=102
3+3b=102
3b=99
b=33 (each of the twin brothers is 33)
Mary is 33+3=36
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Cheers,
Stan H.