SOLUTION: 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 t

Algebra ->  Rate-of-work-word-problems -> SOLUTION: 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 t      Log On


   

Question 256405: 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
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
%281%2F30%29%28t%29+%2B+%281%2F45%29%28t%29+%2B+%281%2F90%29%28t%29+=++1
multiply by 90 to get
3t+%2B+2t+%2B+t+=+90
6t+=+90
t = 15
15 minutes