TAMBAH DAN TOLAK UNIT MASA A) 17 jam 50 minit + 6 jam 55 minit Jam Minit 17 50 + 6 55 23 105 + 1 - 60 24 45 = 24 jam 45 minit = 1 hari 45 minit B) 18 jam - 6 jam 45 minit Jam Minit 17 60 18 00 - 6 45 11 15 = 11 jam 15 minit 35