The product of two positive numbers is 750. The first number is 5 less than the second number. The equationx(x – 5) = 750 can be used to find x, the value of the greater number.

Substitute the choices into the equation for the greater number, x. For x = 30, the product is 30(30 − 5) = 30 × 25 = 750, so it satisfies the equation. The greater number is 30, choice C.

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