Question 442274
------	Price	----------------	quantity										
Coffee type I	80	----------------			40								
Coffee type II	10	----------------			x								
Total	30	----------------	40	+	x								
													
80*40+10*x=30(40+x)
3200+10x=1200+30x					
10x-30x=1200-3200					
-20x=-2000								
/-20									\
x=	100	pounds	10%	Coffee type II