Answer:
Amount charged by Keiji Kuroki for every daily paper (Mon.-Fri.) he delivers=$0.08
Amount charged by Keiji Kuroki for every Sunday paper=$ 0.75
Total amount that Keji Kuroki will collect for delivering 574 daily papers and 165 Sunday papers
=574 × [6 days (That is from monday to friday)]×$0.08 +165×[1 Day that is Sunday]×$0.75
=574 × 6 × $0.08 +165× $ 0.75
=3444×$0.08 +123.75
=$275.52 +$123.75
=$ 399.27