If coefficient of variation is $60$ and standard deviation is $24$ , then Arithmetic mean is

40

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\frac{1}{40}

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\frac{7}{20}

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\frac{20}{7}

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Solution

The correct option is A $40$
Coefficient of variation $= \frac{S t a n d a r d d e v i a t i o n}{A r i t h m e t i c M e a n} \times 100$
$⟹ 60 = \frac{24}{A . M .} \times 100$
$⟹ A . M . = \frac{24}{6} \times 10$
$A . M . = 40$

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