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Mathematics, 09.07.2019 16:00 balwinderdev

It takes 5 mins to fill a twin size air mattress (39 by 8.75 by 75 inches). how long will it take to fill a queen sized mattress (60 by 8.75 by 80 inches)?

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It takes 5 mins to fill a twin size air mattress (39 by 8.75 by 75 inches). how long will it take to...
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