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Finding Increase or Decrease Percentage in Situations

A number 42...

Question

A number $42$ was misread as $24$ . Find the reading error in percent

45 %

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25 %

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42.8 %

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36.8 %

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Solution

The correct option is D $42.8 %$
Error $= 42 - 24 = 18$

Therefore, $%$ error

$= \frac{18}{42} \times 100 %$

$= 42.8$ %

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