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Demetris Boehm ∙
Assuming that this is all in one day ...
9:30am is 2½ hr before Noon, and 3:30pm is 3½ hr after Noon, SO
2½ + 3½ = 6 hr
It is 4 hours.
7 hours and 30 minutes.
7
9 + 24k where k is an integer.
1230
18½ hours
7 hours
8 hours.
1.5 hours.
2hrs and 30mins
9 hours and 30 minutes.
5 and a half