Question 1116799
 Luke is 2 years younger than his friend. Five years ago, Luke was three-fifths of his friends age. How old is Luke now? 
Equations:
L = F - 2
L-5 = (3/5)(F-5)
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Substitute for "L" and solve for "F"::
F-2-5 = (3/5)F - 3
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F-7 = (3/5)F - 3
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F-4 = (3/5)F
(2/5)F = 4
F = 10 yrs
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Ans: Luke = F-2 = 8 yrs old
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Cheers,
Stan H.
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