l86 MODERN METHODS OF TESTING MILK 



EXAMPLES FOR PRACTICE 



(i) How many pounds of fat in 2,000 pounds of 

 cheese containing 35 per cent, of fat? 



(2) How much water in i,ooQ pounds of butter 

 containing 14.5 per cent, of water? 



(3) How many grams of milk-sugar are there in 

 500 grams of milk containing 5 per cent, of milk- 

 sugar ? 



(4) How much fat is there in 1,200 pounds of 

 cream testing 44 per cent, of fat? 



(5) How much fat is there in 5,000 pounds of skim- 

 milk testing .15 per cent, of fat? 



2. FINDING PER CENT. OF ANY CONSTITUENT 



Rule. — To find the per cent, of any constituent in 

 milk, etc., when the weight of the milk, etc., and the 

 weight of the constituent are known, multiply the 

 zueight of the constituent by 100 and divide the result 

 by the weight of the milk, etc. Example : What is 

 the per cent, of fat in 675 pounds of milk containing 

 31.05 pounds of fat? ^'•°^^^'°° = 4.6 per cent. 



EXAMPLES FOR PRACTICE 



(i) What is the per cent, of fat in 120 pounds of 

 butter containing 96 pounds of fat? 



(2) What is the per cent, of water in 600 pounds 

 of cheese containing 210 pounds of water? 



