$\mathrm{How} \mathrm{many} \frac{1}{5} \mathrm{are} \mathrm{there} \mathrm{in} 5?$

$\begin{array}{rcl} & & \mathrm{To} \mathrm{calculate} :\\ & & \mathrm{How} \mathrm{many} \frac{ 1}{5} \mathrm{are} \mathrm{there} \mathrm{in} 5\\ & & \\ & & \mathrm{Calculations}:\\ & & \mathrm{This} \mathrm{question} \mathrm{can} \mathrm{be} \mathrm{solved} \mathrm{by} \mathrm{dividing} 5 \mathrm{by} \frac{ 1}{5}\\ & =& >\frac{ 5}{{\displaystyle \frac{1}{5}}}=25\\ & & \\ & & \mathrm{Hence} \mathrm{option} \mathrm{B} \mathrm{is} \mathrm{correct}.\end{array}$