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olya-2409 [2.1K]

3 years ago

15

During the school year, Gianna usually keeps a regular sleeping schedule. She goes to bed at 9:15 p.m. and wakes up at 6:30 a.m.

For how long does Gianna sleep on a school night? Express the answer in hours and minutes.

1 answer:

mariarad [96]3 years ago

3 0

9 hours and 15 minutes

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