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Finding the Increase or Decrease in Percent

A number is i...

Question

A number is increased by 10% and then it is decreased by 10%. The net increase or decrease percent is

A

3%

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B

4%

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C

2%

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D

1%

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Solution

The correct option is D
1%

Let the number = 100

New number = $\frac{100 \times 110 \times 90}{100 \times 100} = 99$

$100 - 99 = 1$ % decrease.

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