1. 45 menit= ......... jam 2. 7.200= ............. jam

1. 1 jam = 60 detik
1 menit = 1/60 detik
45 x 1/6 = 3/4 = 0,75 jam

2. 1 jam = 3600 detik
7200/3600 = 2

Semoga membantu :)