Question 153401
if it takes you 6 hours to run four loads with only one washer, 
Each load takes 6/4 = 3/2 hr per washer
--------------------

how long would it take to run the same at the laudromat using 3 washers?
----------------------
(# of loads)/(# of washers)k = (# of hours)
(4/1)k = 6
k = 3/2
--------------
EQUATION:
(# of loads)/(# of washers)(3/2) = # of hours
(4) /( 3) (3/2) = # of hours
4/2 = # of hours
2 = # of hours
-------------------
Ans: In 2 hours, 3 washers can do 4 loads.
========================
Cheers,
Stan H.