Answer:
[tex]2.5\% = \frac{2.5}{100} \\ \\ = \frac{25}{1000} [/tex]
divide numerator and denominator by 25:
[tex] = \frac{25 \div 25}{1000 \div 25} \\ \\ ={ \boxed{ \boxed{ \frac{1}{40} }}}[/tex]
