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Question
`1/8` of a number equals `2/5 ÷ 1/20`. What is the number?
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Solution
Let the number be x.
Then, `1/8` of a number = `2/5 ÷ 1/20` ...[Given]
`\implies 1/8 xx x = 2/5 xx 20` ...`[∵ "Reciprocal of" 1/20 = 20]`
`\implies x/8 = 8`
`\implies` x = 8 × 8
`\implies` x = 64
Hence, the number is 64.
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