One person can do a certain job in fifteen minutes and another person can do the same job in thirty minutes how many minutes will it take them to do the job together A) 5 min B)10 min C) 20 min - QAmmunity.org

One person can do a certain job in fifteen minutes and another person can do the same job in thirty minutes how many minutes will it take them to do the job together A) 5 min B)10 min C) 20 min

asked Jan 13, 2019 221k views

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