1/20(a)=.025
\(\frac{1}{20}a=0.25\\a=0.25\cdot 20\\\color{blue}a=5\)
\(\frac{1}{20a}=0.25 \\20a=\frac{1}{0.25}\\a=\frac{1}{0.25\cdot20}\\\color{blue}a=\frac{1}{5}\)
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