Basic FormulasRule 1Rule 2Rule 3Rule 4Rule 5Rule 6Rule 7Rule 8Rule 9Rule 10Rule 11Rule 12Rule 13Rule 14Rule 15Rule 16Rule 17Rule 18Rule 19Rule 20Rule 21Rule 22Rule 23Rule 24Rule 25Rule 26 
Formula / Rule / Type 3 :
Direct Formula / Rule 3 : A mixture of a certain quantity of milk with 16 litres of water is worth 90 P per litre. If pure milk be worth 108 P per litre how much milk is there in the mixture?

Basic FormulasRule 1Rule 2Rule 3Rule 4Rule 5Rule 6Rule 7Rule 8Rule 9Rule 10Rule 11Rule 12Rule 13Rule 14Rule 15Rule 16Rule 17Rule 18Rule 19Rule 20Rule 21Rule 22Rule 23Rule 24Rule 25Rule 26 