SOLUTION: suppose that two hoses are working together to fill a swimming pool.one of the hoses can fill the pool alone in 7 hours the other can fill the pool alone in 12 hours how long would

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: suppose that two hoses are working together to fill a swimming pool.one of the hoses can fill the pool alone in 7 hours the other can fill the pool alone in 12 hours how long would      Log On


   

Question 619812: suppose that two hoses are working together to fill a swimming pool.one of the hoses can fill the pool alone in 7 hours the other can fill the pool alone in 12 hours how long would it take both hoses to fill the pool together?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

two hoses are working together to fill a swimming pool.

one of the hoses can fill the pool alone in 7 hours the other can fill the pool alone in 12 hours 

how long  highlight%28x%29   would it take both hoses to fill the pool together?

  PER hr KEY

 1/7 + 1/12 = 1/x   |Multiplying thru by 84x so as all denominators = 1

  12x + 7x = 84

    19x = 84

      x = 4.42 hr