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20 May, 10:15

A number increased by 25% and the result is 9000. What was the original number? A. 2250 B. 7200 C. 36000 D. 11250

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  1. 20 May, 12:48
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    Option B, 7200

    Step-by-step explanation:

    Step 1: Make an expression

    A number increased by 25% and the result is 9000.

    x * (1 + 0.25) = 9000

    x * (1.25)

    1.25x = 9000

    Step 2: Divide both sides by 1.25

    1.25x / 1.25 = 9000 / 1.25

    x = 7200

    Answer: Option B, 7200
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