Zilla spent 7% of her monthly earnings on rent, half of it on her other monthly expenses, and put the rest in her savings. If she spent $133 on her rent, how much does she deposit into her savings account in a month?
Since $133 is equal to 7% of her earnings, then 1% is equal to $133/7 = $<T>divide(133, 7)=19.0
The total monthly earning of Zilla is represented by 100%, so $19 x 100 = $<T>multiply(19, 100)=1900 is her monthly earnings.
So, $1900/2 = $<T>divide(1900, 2)=950.0 is spent on her other monthly expenses.
The total amount spent on the rent and other monthly expenses is $133 + $950 = $<T>add(133, 950)=1083
Hence, she saves $1900 - $1083 = $<T>subtract(1900, 1083)=817 per month.
