CREAMERY PROBLEMS. 275 



57. To find the per cent of cream from milk. 

 Problem: 5,000 lbs. of milk, delivered 800 lbs. of 



cream. Find the per cent of cream from milk. 



Rule: Divide the total cream pounds by the total 

 milk pounds, multiply the quotient by 100; the re- 

 sult is the per cent of cream from milk. 



Solution 800-^5000=.16Xl00=16%. Ans. 

 or 800X100-4-5000=16%. Ans. 



or 800/5000 reduced = ■4/25, expressed 



decimally 4/25=.16 or 16%. 



Explanation: AVhen 5,000 lbs. milk give 800 lbs. 

 cream, 1 lb. of milk will give as many pounds as 

 5,000 is contained in 800 lbs. cream, which is .16; 

 100 lbs. milk will give 100X-16,or 16 lbs. or 16%. 

 Ans. 



Problems for Practice. 



What is the per cent of cream from : 



1. 8,780 lbs. milk delivering 900 lbs. cream? 



Ans. 10.25%. 



2. 10,900 lbs. milk delivering 1,275 lbs. cream? 



Ans. 11.69%. 



3. 20,785 lbs. milk delivering 3,750 lbs. cream? 



Ans. 13.23%,. 



4. 35,000 lbs. milk delivering 7,000 lbs. cream? 



Ans. 20. %. 



5. 50,000 lbs. milk delivering 9,500 lbs. cream? 



Ans. 19. %. 



58. To find the per cent of cream from milk, when 

 the amount of skim milk and cream separated are 

 known. 



