Mathematics, 01.03.2020 07:26 wardlawshaliyah
Working alone, Hongyi can do a certain job in three hours and Yuming can do the same job in two hours. At these rates, how long would it take Hongyi and Yuming to do this job working together?
Answers: 3
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Working alone, Hongyi can do a certain job in three hours and Yuming can do the same job in two hour...
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