<PRE><B>Question 570802</B>
----------------	Price	----------------	quantity									
Tea type I  	90	----------------10	pounds						
Tea type II 	72	----------------x	pounds						
Mixture	78	----------------	10+x	pounds						
												
sum of individual components = quantity in mixture												
90*10+72x=78(10	+x)
900+72x	=780+78	x				
72x -78	x=-120							
-6x=-120									
	x=	-120	/	-6								
	x=	20										
20	pounds	of 	Tea type II 	costing	Rs.	72	has to be added					
m.ananth@hotmail.ca												
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