<PRE><B>Question 446383</B>
Filling the pool is 1 job						
Jill	0.5	hours				
It does 	2      	jobs in 1	hours			
Jack	0.75	hours				
It does 	1  1/ 3	of thejob in 1 	hours			
John	1.5	hours				
It does 	 2/3	of the job in 1 	hours			
						
Together they will do 		2    	+	1.33	+	0.67
Together they will do 		4      		of the job in one 		hours
So they will take 		 1/4	hours			
So they will take 		0.25	hours			
						
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