A number 4.625 is wrongly entered as 4.265. Find the percentage error.

11.11%

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6.66%

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7.78%

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Solution

The correct option is C 7.78%
Difference in the two numbers = 4.625 - 4.265 = 0.36

Percentage error $= \frac{D i f f e r e n c e}{O r i g i n a l N u m b e r} \times 100$

$= \frac{0.36}{4.625} \times 100 = 7.78 %$

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