SOLUTION: Pump A can fill a tank in 5 minutes while pump B can fill a tank in 10 minutes. How long will it take to fill the tank if both are working together?

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Question 860945: Pump A can fill a tank in 5 minutes while pump B can fill a tank in 10 minutes. How long will it take to fill the tank if both are working together?

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Let x represent time together

Use fill per min as equalizer: 

 1%2F5+%2B+1%2F10+=+1%2Fx+     |Multiplying thru by 10x so as all denominators = 1 

 2x + x = 10

    3x = 10min

     x = 10/3   0r    3  1⁄3 min