Answer:
80/2, 120/3, 160/4, 200/5, 240/6, 280/7, 320/8, 360/9, 400/10, 440/11, 480/12, 520/13, 560/14 , 600/15, 640/16, 680/17, 720/18, 760/19, 800/20, 840/21
Step-by-step explanation:
