tolong di jawab pakai caranya juga kak

1. 15/2 : 1/4 = 15/2 x 4/1=60/2 =30 bungkus plastik
2. 4200m : 50m = 84 bendera
3. 17/2 : 25/100 = 17/2 x 100/25 =1700/50=34 kabel
4. 65/10 : 1/4 = 65/10 x 4/1=260/10=26 kodi
=520 lembar
5. 7/2 : 1/4 = 7/2 x 4/1=28/2=14 pensil