Question 818961
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Hi
A pond can be filled by one pipe in 8 hours and by a second pipe in 24 hours. How long {{{green(x)}}} will it take using both pipes to fill the pond?
 {{{1/(8hr) + 1/(24hr) = 1/x}}}      |Multiplying thru by 24x so as all denominators = 1
    3x + x = 24              |Solve for x