SOLUTION: how do you solve equations involing ages? for exampe:
Tom is 4 years older than Jerry.Nine years ago,Tom was 5 times as old as Jerry was then. How old is each now?
thank you
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-> SOLUTION: how do you solve equations involing ages? for exampe:
Tom is 4 years older than Jerry.Nine years ago,Tom was 5 times as old as Jerry was then. How old is each now?
thank you
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Question 344821: how do you solve equations involing ages? for exampe:
Tom is 4 years older than Jerry.Nine years ago,Tom was 5 times as old as Jerry was then. How old is each now?
thank you Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Tom is 4 years older than Jerry.Nine years ago,Tom was 5 times as old as Jerry was then. How old is each now?
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Equations:
T = J+4
(T-9) = 5(J-9)
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Substitute for "T" and solve for "J":
(J+4-9) = 5J-45
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J-5 = 5J-45
J = 5J - 40
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4J = 40
J = 10 yrs (Jerry's age now)
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Since T = J+4, T = 14 yrs (Tom's age now)
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Cheers,
Stan H.
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