SOLUTION: One-half of someone's age four years from now minus three-fourths of someone's age four years ago is zero. What is someone's present age?
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Question 176507: One-half of someone's age four years from now minus three-fourths of someone's age four years ago is zero. What is someone's present age? Answer by Mathtut(3670) (Show Source):
You can put this solution on YOUR website! lets call someone's age x
:
1/2(x+4)-3/4(x-4)=0....equation
:
(1/2)x+2-(3/4)x+3=0...distributed terms
:
2x+8-3x+12=0...multiplied all terms by 4
:
-x=-20
: years old
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