Question 464520
Helen is 1/3 as old as her mother is now. In 10 years she will be half as old as her mother in ten years. How old is Helen now?
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Equations:
h = (1/3)m
m = 3h
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(h+10) = (1/2)(m+10)
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Substitute for m and solve for "h"
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h+10 = (1/2)(3h+10)
2h+20 = 3h+10
h = 10 yrs (Helen's age now)
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Cheers,
Stan H.