Question 784735
Paul is twice as old as Sarah. Rob is fourteen years older than Sarah's age. If Rob's age is 10 more than Paul's age, how old is Sarah?
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Equations:
p = 2s
r = s+14
r = p+10
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s = r-14
Substitute for "r":
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s = (p+10)-14 = p-4
Substitue for "p":
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s = 2s-4
Solve for "s":
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s = 4 yrs (Sarah's age now)
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Cheers,
Stan H.