Question 698578
3500 is total amount, so 100%
make two columns, a $ amount column and a percent column, list what we know and what we don't know (dollar amount equivalent to 13%) would be x
$ amount***percent
3500*******100
x**********13
multiply across
3500*13=100x 
45500=100x divide each side by 100
455=x
so 13% is $455