Hazel records two programmes from televisio

The first lasts 1 hour. 35min and the second

1 hour, 45min. The dise she records on is a

blank 4-hour disc.

How much blank time is left on the disk after recording

Again?

Answer:

40 minutes of blank time

Step-by-step explanation:

1 hour 35 min + 1 hour 45 min.

35 min + 45 min = 80 min

80 min - 60 min = 20 min

35 min + 45 min = 1 hour 20 min

1 hour + 1 hour + 1 hour, 20 min = 3 hours, 20 minutes

4 hours - 3 hours, 20 minutes

4 hours - 3 hours = 1 hour

1 hour - 20 minutes

1 hour = 60 minutes

60 minutes - 20 minutes = 40 minutes