Question 113448
If the ratio of key to student council is 7 to 9,
then the ratio of key to total is 7 to 16 and 
the ratio of student council to total is 9 to 16. 
If the total is 353, then the ratio equation would be,,
{{{7/16=X/353}}}
where X is the total number of key members in your total. 
{{{x=(353*7)/16}}}
{{{x=154.4375}}}
We round that value down to 154 since we can only have integer values. 
X=154