Question
Twenty times a positive integer is less than its square by 96. What is the integer ?
Answer: Option B
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Let the integer be `x`
Then `x^2 - 20x` = 96 `hArr` `x^2 - 20x` - 96 = 0 `hArr` `(x + 4) (x - 24)` = 0 `hArr` `x` = 24
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