Question 918058
Betty's age is {{{(2/5)*60=2*60/5=24}}}
 
NOTE:
You can make the calculation in your head easily,
without grabbing the calculator,
if you simplify that {{{2*60/5}}} fraction first,
and multiply last, like this:
{{{2*60/5=2*6*10/5=2*6*(10/5)=2*6*2=24}}}.