Subjects arithmetic

Percentage Calculations 677B3E

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Question: User: 25% of 160 = 60% of 130 = 20% of 110 = 37 1/2% of 32 = top-left: 25% of 160 = [blank box] top-right: 60% of 130 = [blank box] bottom-left: 20% of 110 = [blank box] bottom-right: 37 1/2% of 32 = [blank box]
1. **State the problem:** Calculate the following percentages of given numbers: - 25% of 160 - 60% of 130 - 20% of 110 - 37 1/2% of 32 2. **Formula:** To find $p\%$ of a number $N$, use the formula: $$\text{Result} = \frac{p}{100} \times N$$ 3. **Calculate each:** - For 25% of 160: $$25\% = \frac{25}{100} = 0.25$$ $$0.25 \times 160 = 40$$ - For 60% of 130: $$60\% = \frac{60}{100} = 0.6$$ $$0.6 \times 130 = 78$$ - For 20% of 110: $$20\% = \frac{20}{100} = 0.2$$ $$0.2 \times 110 = 22$$ - For 37 1/2% of 32: First convert mixed percentage to improper fraction: $$37 \frac{1}{2}\% = 37.5\% = \frac{37.5}{100} = \frac{75}{200} = \frac{3}{8}$$ Calculate: $$\frac{3}{8} \times 32 = \cancel{\frac{3}{8}} \times \cancel{32} = 3 \times 4 = 12$$ 4. **Final answers:** - 25% of 160 = $40$ - 60% of 130 = $78$ - 20% of 110 = $22$ - 37 1/2% of 32 = $12$