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NCERT Exemplar Solutions Class 7 Mathematics Solutions for Fractions and Decimals - Exercise in Chapter 2 - Fractions and Decimals
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1/8 of a number equals \frac{2}{5}\div\frac{1}{20}. What is the number?
Answer:
Let the number be x
ACQ,
\frac{1}{8} \times x=\frac{2}{5} \div \frac{1}{20} \\ \Rightarrow \frac{x}{8}=\frac{2}{5} \times \frac{20}{1} \\ \Rightarrow \frac{x}{8}=8 \\ \Rightarrow x=64
Therefore, the required number is 64 .
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