David gets 65 chocolates an hour for cleaning. He gets a 15% raise. He cleans for 60 hours this week. How much more chocolates will he get this week as a result of his raise?

Before raise: 65 chocolates/hour*60=3900 chocolates

Raise=65 * (15%=15/100=.15) .15=9.75 more chocolates per hour

With raise 74.75 chocolates/hour*60=4485 chocolates

4485-3900=585 more chocolates per 60 hour week