Question

If some one is doing a 20 mile bike ride.He has cycled 11 miles so far.What percentage of the total distance has he cycled

Answer 1

if we take 20 to be the 100%, what is 11 off of it in percentage?

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 20&100\\ 11&x \end{array}\implies \cfrac{20}{11}=\cfrac{100}{x}\implies 20x=1100 \\\\\\ x=\cfrac{1100}{20}\implies x=55$