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one pump can empty a pool in 2 days, whereas a second pump can empty the pool in 11 days. How long will it take the two pumps, working together, to empty the pool?It will take the two pumps ___ days to empty the pool together.

Respuesta :

Let x be the number of days it will take the two pump to empty the pool together

[tex](\frac{1}{2}+\frac{1}{11})\times x=1[/tex][tex](\frac{11+2}{22})\times x=1[/tex][tex]\frac{13}{22}x=1[/tex]

Multiply both-side by 22/13

[tex]x=\frac{22}{13}[/tex][tex]=1.6923[/tex]

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