so, the first 10 suits came with a commission of 5%, so for each suit it was:
2505%
this is \(\frac{250*5}{100} = \frac{25*5}{10} = \frac{25}{2} =12.5\)
but this counts for 10 suits, so together his commssion was 1012.5=125 dollars
and the "extra" 3 suits came with a comittion of 5+3 percent, so 8 percent, which is
\(\frac{250*8}{100} = \frac{25*8}{10} = \frac{25*4}{5} =20\)
for each suit, and 60 in total.
his total comission was 125+60=185 dollars.