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Mathematics, 16.10.2019 08:30 brainbean
Anew machine makes 20,000 aluminum cans three times faster than an older machine. with both machines operating, it takes 15 h to make 20,000 cans. how long would it take the new machine, working alone, to make 20,000 cans?
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Anew machine makes 20,000 aluminum cans three times faster than an older machine. with both machines...
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