A number is reduced by 20% and becomes 168. Find the original number.
210
Let the original number be \(x\).
Reducing it by 20% gives \(x - 0.20x = 0.80x\), and this equals 168.
So \(0.80x = 168 \Rightarrow x = \frac{168}{0.80} = 210\).
Therefore, the original number is \(210\).
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