tlg di bantu cara no 3,4 dan 5 ya kak...

3.
- Waktu = 10.30 - 08.15 = 02.15 = 2 jam 15 menit = 2¼ jam
- Kecepatan = 60 km/jam

J = K × W
J = 60 km/jam × 2¼ jam
J = 60 km/jam × 9/4 jam
J = 135 km

Jawaban : c. 135 km

4.
- 3 jam 15 menit = 3¼ jam = 13/4 jam
- 15 menit = ¼ jam
- 2 jam 30 menit = 2½ jam = 5/2 jam

11 - 13/4 + ¼ + 5/2
= 44/4 - 13/4 - ¼ - 10/4
= 20/4
= 5
= 05.00

Jawaban : b. 05.00

5.
- Jarak = 180 km
- Waktu = 4 jam 30 menit = 4½ jam = 9/2 jam

K = J ÷ W
K = 180 km ÷ 9/2 jam
K = 180 km × 2/9 jam
K = 360/9 km/jam
K = 40 km/jam

Jawaban : a. 40 km/jam

Maaf Kalau Salah