Question 705607
 Federique is two years older than her brother. Twelve years ago, she was twice as old as he was. HOw old are they now?
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Equations:
F = B + 2
F-12 = 2(B-12)
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Substitute for "F" and solve for "B":
B+2-12 = 2B-24
B = 14 yrs (Brother's age now)
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Solve for F: 
F = B + 2
F = 16 yrs (Federique"s age now)
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Cheers,
Stan H.
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