Question

Mai spends 7 3/5 hours in school each day. Her lunch period is 30 minutes long, and she spends a total of 42 minutes switching rooms between classes. The rest of her day is spent in 6 classes that are all the same length. How long is each class?

Answer 1

The each class is 64 minutes or 1 hour 4 minutes long.

Explanation:

1 hour = 60 minutes.

• Total time spent in school = 7 hours+3/5 hour = 7(60) + (3/5)(60) minutes.
• Total time = 420+36 = 456 minutes.
• Lunch period = 30 minutes.
• Time for switching classrooms = 42 minutes.

Time spent in 6 classes :

Time spent in 6 classes = Total time - (lunch period + switching classes)

⇒ 456 - (30+42)

⇒ 456 - 72

⇒ 384 minutes.

The Time for each of 6 classes :

Time for each class = Time spent for all 6 classes / 6

⇒ 384/6

⇒ 64 minutes.

⇒ 1 hour 4 minutes.