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Question

Frame and solve the equations for the following statements:
A number decreased by $5$ % of it is $3800$ . What is the number?

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Solution

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Let the number be $x$ .
Then, $x - \frac{5}{100} x = 3800 \Rightarrow x - \frac{x}{20} = 3800 \Rightarrow \frac{19 x}{20} = 3800 \Rightarrow x = \frac{3800 \times 20}{19} = 4000$

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