Asked by Emily
3 pumps were used to empty a pond hold an unknown amount of water. If pump 1 can empty it in 4 days, pump 2 in 10 days and #3 in 5 days, how many days will it take to empty the pond if all 3 are running at the same time?
Answers
Answered by
John
Let x = time (days) for all 3
then
x(1/4 + 1/10 + 1/5) = 1
multiplying both sides by 20
x(5 + 2 + 4) = 20
x(11) = 20
x = 20/11
x = 1.82 days
or
x = 1 day, 19 hours and 38 minutes
then
x(1/4 + 1/10 + 1/5) = 1
multiplying both sides by 20
x(5 + 2 + 4) = 20
x(11) = 20
x = 20/11
x = 1.82 days
or
x = 1 day, 19 hours and 38 minutes
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.