Question 580224: john is two years less than four times as old as mary. john is also one year more than three times as old as mary. how old is each Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! john is two years less than four times as old as mary. john is also one year more than three times as old as mary. how old is each
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Equations:
j = 4m-2
j = 3m+1
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Substitute and solve for "m":
4m-2 = 3m+1
m = 3 yrs (Mary's age now)
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Solve for "j":
j = 4m-2
j = 4*3-2 = 10 yrs (John's age now)
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Cheers,
Stan H.