SOLUTION: David is 3 years older than his brother John. Three years ago John's age was 6 more than one-forth of david's age. what are their present ages ?
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Question 719656: David is 3 years older than his brother John. Three years ago John's age was 6 more than one-forth of david's age. what are their present ages ?
thank you
You can put this solution on YOUR website! David is 3 years older than his brother John. Three years ago John's age was 6 more than one-forth of david's age. what are their present ages ?
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Equations:
d = j + 3
j+3 = (1/4)(d-3)+6
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Rearrange:
d-3+3 = (1/4)(d-3)+6
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4d = d-3 + 24
3d = 21
d = 7 yrs (David's age now)
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j = d-3 = 4 yrs (John's age now)
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Cheers,
Stan H.
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