Convert $1.25\%$ into a fraction in lowest terms.

Convert $1.25\%$ into a fraction in lowest terms.
  1. $\dfrac{1}{8}$
  2. $\dfrac{1}{80}$
  3. $\dfrac{125}{100}$
  4. $\dfrac{5}{4}$

Solution

$1.25\% = \dfrac{1.25}{100} = \dfrac{125}{10000} = \dfrac{1}{80}$.

Asked in: IMO

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