+0  
 
0
77
1
avatar

Nine large hoses can fill a swimming pool in four hours and six small hoses can fill the same swimming pool in eight hours.How long will it take four large hoses and eight small hoses working together to fill the swimming pool?

 Mar 27, 2022
 #1
avatar
0

4/9 of the large hose will take  9/4 of the time    9/4 * 4 hrs = 9 hours/pool   = 1/9  pool /hrs

8 small hoses will take 6/8 of the time                  6/8 * 8 hrs = 6 hrs/pool = 1/6 pool /hrs

 

1 pool/ (1/9 + 1/6) = 3.6 hrs

 Mar 27, 2022

37 Online Users

avatar