Asked by TinaG
                One pipe can fill a swimming pool in 8 hours. 
Another pipe takes 12 hours. How long will it take to fill the pool if both pipes are used simultaneously?
            
        Another pipe takes 12 hours. How long will it take to fill the pool if both pipes are used simultaneously?
Answers
                    Answered by
            Anonymous
            
    Pipe A will fill 1/8 of the pool is 1 hour.  Pipe B will fill 1/12 of the pool in 1 hour.
So, 1/8 + 1/12 = 5/24
It will take 4.8 hours to fill the pool.
    
So, 1/8 + 1/12 = 5/24
It will take 4.8 hours to fill the pool.
                    Answered by
            Andre
            
    it will fill it in 24 hours, because 1/8-1/12= 1/24. So it will be 24 hours. We are subtracting, the two because the water is draining out at the same time. 
    
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