Question 504870
sapana is six years younger than kristen. six years ago, kristen was three times as old as sapana was than. how old was sapana six years ago?
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Equations:
s = k-6
k-6 = 3(s-6)
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Substitute for "s" and solve for k:
k-6 = 3(k-6-6)
k-6 = 3k - 36
2k = 30
k = 15 (kristen's age now)
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Solve for "s":
s = k-6
s = 15-6 = 9 (sapana's age now)
s-6 = 9-6 = 3 (sapana's age 6 years ago)
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Cheers,
stan H.
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