Question 606066
Heather is 15 years older than Kim. In 10 years heather will be twice as old as Kim will be. How old is heather now
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Equations:
h = k + 15
(h+10) = 2(k+10)
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Substitute for "h" and solve for "k":
k+15 + 10 = 2k + 20
k + 25 = 2k + 20
k = 5 (Kim's age now)
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Solve for "h":
h = k + 15
h = 5 + 15 = 20 yrs (Heather's age now)
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Cheers,
Stan H.
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