Jawaban
1. 2/5 menit
= 2/5 x 60 detik
= 120/5 detik
= 24 detik
2. 2/5 jam
= 2/5 x 3.600 detik
= 7.200/5 detik
=1.440 detik
3. 120 menit
= 120 x 1/60 jam
= 120/60 jam
= 2 jam
4. 720 detik
= 720 x 1/60 menit
= 720/60 menit
= 12 menit
5. 180 menit
= 180 x 1/60 jam
= 180/60 jam
= 3 jam
6. 45 menit
= 45 x 1/60 jam
= 45/60 jam
= 3/4 jam
7. 90 detik
= 90 x 1/60 menit
= 90/60 menit
= 3/2 menit
= 1 1/2 menit
8. 300 detik
= 300 x 1/60 menit
= 300/60 menit
= 5 menit