the complete question is
Peter's allowance is the same every month.Each month Peter spends $114 and saves the rest.He saves $432 in a year.What Percent of his allowance does Peter save every month
let
x------> Peter's allowance
we know that
432=(x-114)*12------< 432=12x-1368----> 12x=432+1368
12x=1800
x=1800/12
x=$150
Peter save every month-------> 150-114-----> $36
if $150---------> 100%
$36----------> x
x=36*100/150-----> x=24%
the answer is
24%
