Bantu no 7, 8 ,9 tolong ya

7) Pg:Pa = 10:1000 = 1:100
Skala = 1:100
La = 8x100 = 800 cm = 8m

8) 33250:35 = 950
79200:36 = 2200

9) beli = 1600000
jual = 200x10000 = 2000000
untung = 2000000-1600000 = 400000
400000:1600000x100% = 25 %