SOLUTION: can someone help me pls? solve. A swimming pool can be filled in 15 hr by pipe A alone and in 24 hr by pipe B alone. How long would it take to fill the pool if both pipes wer

Algebra ->  Rate-of-work-word-problems -> SOLUTION: can someone help me pls? solve. A swimming pool can be filled in 15 hr by pipe A alone and in 24 hr by pipe B alone. How long would it take to fill the pool if both pipes wer      Log On


   

Question 469653: can someone help me pls?
solve.
A swimming pool can be filled in 15 hr by pipe A alone and in 24 hr by pipe B alone. How long would it take to fill the pool if both pipes were working?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

Let x represent time it would take to fill the pool if both pipes were working

Question states*** Per hour the Equalizer

 1/15 + 1/24 = 1/x  |Mulitplying thru by 15*24*x so as all denominators = 1

 24x + 15x = 15*24

    39x = 360

      x = 360/39 = 120/13 = 9.23 hr