Question 392205: Jim and his daughter's combined age is 31. Jim is exactly 30 years older than his daughter. How old is his daughter? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Jim and his daughter's combined age is 31. Jim is exactly 30 years older than his daughter. How old is his daughter?
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Equations:
j + d = 31
j = d + 30
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Substitute for for "j" and solve for "d":
d+30+d = 31
2d = 1
d = 1/2 (daughter = 6 months)
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Solve for "j":
j = d+30
j = (1/2) + 30
j = 30 yrs and 6 months (jim's age now)
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Cheers,
Stan H.
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