Tolong pakai caranya ya

1.
7 1/2 kg : 1/4 kg
15/2 * 4/1 = 30

2.
4,2 km : 50 m
4200 m : 50 m = 84

3.
8 1/2 : 25%
17/2 : 25/100
17/2 : 1/4
17/2 * 4/1 = 34

4.
6,5 kodi : 1/4 kodi
65/10 : 1/4
13/2 * 4/1 = 26

5.
3 1/2 lusin : 1/4 lusin
7/2 * 4/1 = 14

1. 7 1/2÷1/4
=15/2×4/1
=30 plastik
2. 4,2km÷50m
=4.200m÷50m
=84buah

maaf cuma itu y...
maaf klo slh