help on algebra 2 question

Algebra
Tutor: None Selected Time limit: 1 Day

Feb 18th, 2015

1/t = 1/3 + 1/4 = 4/12 + 3/12 = 7/12

t = 12/7 = 1.7 hr/room * 22 rooms = 37.7 hrs

Feb 18th, 2015

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Feb 18th, 2015
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Feb 18th, 2015
Dec 5th, 2016
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