tolong y jawab minta bantu maksih

jawb
perbandingan
1) 8/12 = 2/3  = 10/15 = 4/6 = 6/9

2). PS = 21/3 x 7 cm= 49 cm
Luas PQRS = PQ x PS = 21 x 49 = 1.029 cm²

3) 2 liter --> 43 km
1000 km = 1000/43 x 2 liter = 2.000/43 liter

4)
15 kambing --> 30 hari
-6 kambing
9 kambing --> x hari
x/30 = 15/9
x =  30(15/9) = 450/9 = 50 hari = 1 bulan 20 hari

5) s= +_ 2km
v = 60km/jam = 60 km/ 60 mnit = 1 km/menit
t= 2km : 1km/mnit
t = 2 menit