Mathematics, 02.08.2019 23:30, miguearrobita
One crew can seal a parking lot in 9 hours and another in 12 hours. how long will it take to seal the parking lot if the two crews work together?
Answers: 1
of the lot.
of the lot.
) of the lot, which is 
= 
hour
= 5
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One crew can seal a parking lot in 9 hours and another in 12 hours. how long will it take to seal th...
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