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Two ages differ by 24 years; in 4 years their product is 432. Younger age now x. Equation?

Ax²+32x−320=0
Bx²+32x−432=0
Cx²+24x−320=0
Dx²+24x−432=0
Answer & Solution
Correct answer: A. x²+32x−320=0
The future ages x+4 and x+28 give (x+4)(x+28)=432, hence x²+32x−320=0.
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