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Percentages

What per cent...

Question

What per cent of 10 kg is 250 g? (a) $25 %$ (b) $5 %$ (c) $10 %$ (d) $2.5 %$

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Solution

Let $x %$ 10 kg = 250 g $\frac{x}{100} \times 10 k g = \frac{250}{1000} k g x = \frac{250 \times 100}{1000 \times 10} = \frac{25}{10} % = 2.5 %$

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