Question 1003723: The total of three sister's ages is 39. Dina is half as old as Michelle and 3 years younger than Juliette. How old are the sisters? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The total of three sister's ages is 39. Dina is half as old as Michelle and 3 years younger than Juliette. How old are the sisters?
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Equations:
d + m + j = 39
d = (1/2)m
d = j-3
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Substitute for m and for j and solve for "d"::
d + 2d + d+3 = 39
4d = 36
d = 9 yrs (Dina's age)
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m = 2d = 18 yrs (Michelle's age)
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j = d+3 = 12 yrs (Juliette's age)
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Cheers,
Stan H.
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