NECO 2023 · Paper 1 · Q1

Commercial arithmetic

Decrease 120 by $25\%$ .

Worked solution (try it first)

Decreasing by $25\%$ leaves $100\% - 25\% = 75\%$ of the number.
$75\%$ of 120 is $0.75 \times 120 = 90$ , option C.

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