b) 180 c) 72 d) 60 2. 7 hours 70 minutes = ............... hours 10 minutes a) 8 b) 5 c) 7 d) 6 3. 16 years = 11 years _______ months a) 60 b) 50 c) 44 d) 5 4. 3 days 18 hours = 2 days ______hours a) 36 hours b) 48 hours c) 42 hours d) 100 hours