Question 562273
											
	percent	----------------	quantity								
Acid solution	25	----------------40	ounces					
Pure acid	100	----------------x	ounces					
Mixture	40	----------------40+x ounces					
											
25*40+100x=40(40+x)
1000+100x=1600+40x			
100x-40x=1600-1000				
60x=600								
/60										
x=10	ounces	of 	Pure acid