Tolong dibantu dan dikerjakan menggunakan cara

1. Lama acara berlangsung

= 17.00 – 15.45

= 01 jam 15 menit

= 60 menit + 15 menit

= 75 menit

2. Pukul waktu ayah bekerja

= 16.25 – 8 jam

= 16.25 – 08.00

= 08.25

3. Pukul Ika mulai belajar kelompok

= 17.00 – 2 jam

= 17.00 – 02.00

= 15.00

4. Lama Udin di rumah paman

= 16.00 – 10.15

= 5 jam 45 menit

= 5 × 60 menit + 45 menit

= 300 menit + 45 menit

= 345 menit

5. Lama Edi mengantri

= 13.00 – 11.05

= 1 jam 55 menit

= 60 menit + 55 menit

= 115 menit

6. Pukul Ulangan berakhir

= 08.00 + 2,5 jam

= 08.00 + 02.30

= 10.30

7. Pukul bel pulang berbunyi

= 07.00 + 5 jam 40 menit

= 07.00 + 05.40

= 12.40

8. Kecepatan

K = J/W

K = 93 km/3 jam

K = 31 km/jam

9. Jarak

J = K × W

J = 50 km/jam × 4 jam

J = 200 km

10. Jarak

J = K × W

J = 160 km/jam × 1/2 jam

J = 80 km

11. Waktu

W = J ÷ K

W = 240 km ÷ 60 km/jam

W = 4 jam

12. Jarak

J = K × W

J = 100 km/jam × 1/2 jam

J = 50 km

13. Waktu (menit)

W = J ÷ K

W = 40 km ÷ 80 km/jam

W = 0,5 jam

W = 0,5 × 60 menit

W = 30 menit

14. Jarak (km)

J = K × W

J = 20 km/jam × (08.45-08.00)

J = 20 km/jam × 45 menit

J = 20 km/jam × 45/60 jam

J = 900/60 km

J = 15 km

15. Kecepatan

K = J/W

K = 60 km/2 jam

K = 30 km/jam