Ontario Highway Traffic Act

So here is my situation, I was accused of speeding 87 km/h in a 60 km/h. Officer went to his car came back and said he would reduce it to 75 km/h in a 60km/h and had done so on the ticket.

I've looked at the total payable and it reads 52.50 and a set fine of 37.50

According to section 128 i should be paying 15x3($3 per km) = $45 + $5 court ...