Question

in a test if 30% marks are required to clear the test and mary has scored 50 marks out of 120 will she clear the test

Answer 1

is she clear? we dunno, but we know she scored 50 of 120.

if we take 120(origin amount) to be the 100%, what's 50 off of it in percentage?

`\begin{array}{ccll} Amount&\%\\ \cline{1-2} 120 & 100\\ 50& x \end{array} \implies \cfrac{120}{50}~~=~~\cfrac{100}{x} \implies \cfrac{ 12 }{ 5 } ~~=~~ \cfrac{ 100 }{ x } \implies 12x=500 \\\\\\ x=\cfrac{500}{12}\implies x=\cfrac{125}{3}\implies x=41(2)/(3)\qquad \textit{yeap, Mary is clear \checkmark}`