i really need help !
Machine A can fill a bucket from a pipe in 4 minutes. However, Machine B can empty the bucket in 6 minutes. Starting from empty, if the Machines are going at the same time, how long will it take to fill the tank?

Answer :

Answer:

5/12

Step-by-step explanation:

1/4 + 1/6 =

3/12 + 2/12 =

5/12

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