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Question
Find the number a, if 8.4% of a is 42
Solution
\[8 . 4 \% \text{ of a is }42 . \]
\[i . e . , \frac{8 . 4}{100} \times a = 42\]
\[ \Rightarrow a = \frac{42 \times 100}{8 . 4}\]
\[ \therefore a = 500\]
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