60 ÷ 100 × 40 = 0,6 × 40 = 24;
50 ÷ 100 × 23 = 0,5 × 23 = 11,5;
75 ÷ 100 × 30 = 0,75 × 30 = 22,5.
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60 ÷ 100 × 40 = 0,6 × 40 = 24;
50 ÷ 100 × 23 = 0,5 × 23 = 11,5;
75 ÷ 100 × 30 = 0,75 × 30 = 22,5.