15p per 20 + 9p per 15 adalah By Admin ReiPosted on December 9, 2022 15p per 20 + 9p per 15 adalah 15p/20 + 9p/15 = 45p/60 + 36p/60 = 81p/60 15p(3)+9p(4)/60=45p+36p/60=81p/60-