what is one fifth of 15
1/5 of 15=1/5 ×15=3whenever there is of it means u need 2 multiply first no. with second no.
\(\frac{1}{5}\cdot15= \frac{1}{5}\cdot \frac{15}{1}= \frac{1}{5}\cdot \frac{3\cdot5}{1}=3\)
