Question

What is 1 and 1/2% of 400?

Answer 1

`\bf {{ a}}\%\ of\ b \implies \cfrac{{{ a}}}{100}\cdot b\implies {{ a}}/ 100\cdot b\\\\ -----------------------------\\\\ thus \\\\ \begin{cases} {{ 1}}\%\ of\ 400 \implies \cfrac{{{ 1}}}{100}\cdot 400\implies {{1}}/ 100\cdot 400\\ --------------\\ {{ (1)/(2)}}\%\ of\ 400 \implies \cfrac{{{ (1)/(2)}}}{100}\cdot 400\implies {{(1)/(2)}}/ 100\cdot 400 \end{cases}`

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