Question 943837

let {{{x}}} be the number of the students in the school altogether

if {{{12}}}% of the students belong to the Drama Club  and there are {{{66}}} students in the Drama Club, then {{{12}}}%={{{12/100=0.12}}}  of {{{x}}} is equal to {{{66}}}

so, we have 

{{{0.12x=66}}}

 {{{x=66/0.12}}}

{{{x=6600/12}}}

{{{x=550}}}

answer is: a) {{{550}}}