Asked by matixbdm
Jim can fill a pool carrying buckets of water in 30 minutes. Sue can do the same job in 45 minutes. Tony can do the same job in 1 ½ hours. How quickly can all three fill the pool together? ANYBODY KNOW THE ANSWER??
Answers
Answered by
Reiny
Jim's rate = Pool/30
Sue's rate = Pool/45
Tony's rate = Pool/90
combined rate = pool/30 + pool/45 + pool/90
= 6pool/90 = pool/15
So time working combined = pool/(pool/15) = 15
it will take 15 minutes.
Sue's rate = Pool/45
Tony's rate = Pool/90
combined rate = pool/30 + pool/45 + pool/90
= 6pool/90 = pool/15
So time working combined = pool/(pool/15) = 15
it will take 15 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.