kakak tolong bantu ya pakai cara no 1,2,3,4

1. 8 1/3 × 60
= 48 60/3 = 68 m / menit
68 × 60
= 408 m/ jam
= 0,408 km/ jam
30 ÷ 0,408
=73.5294117647

2. 70 km × 6
= 420 km = 420000 m

3. 80 km/2 jam
40 km/jam

4. 14400 ÷ 2
= 7200 m/jam