1. Mother began washing clothes at 7:00 in the morning. She finished washing clothes at 11:00 a.m. How long did mother wash the clothes? 2. Frena went to take snacks at 10:00 in the morning. She finished her snacks at 10:15. How long did she take her snacks? 3. The comedy show in the television program began at 8:00 in the evening and ends at 10:00 p.m. How many hours was the show? 4. Glenn started doing his assignment at 6:30 in the evening. He stopped at 7:50 p.m. to eat his dinner. How long did he answer his assignment?​