3/4 : 0.3% =
[tex]30\% \times \frac{1}{3} [/tex]
[tex] = \frac{30}{100} \times \frac{1}{3} [/tex]
[tex] = \frac{30 \times 1}{100 \times 3} = \frac{30}{300} [/tex]
[tex] = \frac{30}{10 \times 30} = \frac{1}{10} = 0.1[/tex]
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[tex] \frac{3}{4} \div 0.3\%[/tex]
[tex] = \frac{3}{4} \div ( \frac{3}{10} \times \frac{1}{100} )[/tex]
[tex] = \frac{3}{4} \div \frac{3 \times 1}{10 \times 100} [/tex]
[tex] = \frac{3}{4} \div \frac{3}{1000} [/tex]
[tex] = \frac{3 \times 1000}{4 \times 3} = \frac{3000}{12} = \frac{250 \times 12}{12} [/tex]
[tex] = 250[/tex]
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