An inspector rejects $0.08 %$ of the metres as defective. How many metres he will have to examine to reject $2$ metres?

200

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250

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2500

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3000

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Solution

The correct option is C $2500$
Let the inspector examine $x$ metres, then $0.08 %$ of $x = 2$
$\Rightarrow \frac{x \times 0.08}{100} = 2$

$\Rightarrow x = \frac{200}{0.08} = \frac{200 \times 100}{8} = 2500$ .

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An inspector rejects 0.08% of the metres as defective. How many metres he will have to examine to reject 2 metres?

The correct option is C 2500Let the inspector examine x metres, then 0.08% of x=2⇒x×0.08100=2⇒x=2000.08=200×1008=2500.

An inspector rejects $0.08 %$ of the metres as defective. How many metres he will have to examine to reject $2$ metres?

The correct option is C $2500$
Let the inspector examine $x$ metres, then $0.08 %$ of $x = 2$
$\Rightarrow \frac{x \times 0.08}{100} = 2$

$\Rightarrow x = \frac{200}{0.08} = \frac{200 \times 100}{8} = 2500$ .