Milk and Cream 



33 



suit will be a 37-pound mixture testing 5 per cent. 

 Answer. 



Problem. 



How many pounds of 28 per cent cream and 3 

 per cent milk will be required to make 500 pounds 

 of a mixture testing 4 per cent? In this problem a 

 definite number of pounds of the mixture is required. 



According to the diagram, 1 pound of 28 per cent 

 cream is required to every 24 pounds of 3 per cent 

 milk to make a mixture testing 4 per cent. This 

 would make 25 pounds of the mixture, but 500 

 pounds is the amount desired. In other words, the 

 number of pounds desired is 20 times larger than 

 the number of pounds on hand (500-^-25 = 20). 

 The amounts must be kept in the proportion of 1 :24. 

 Therefore, in order to get 500 pounds of mixture, it 

 is necessary to multiply both the 1 and the 24 by 20. 

 This would give a result of 20 pounds of 28 per cent 

 cream and 480 pounds of 3 per cent milk, which 

 mixed will equal 500 pounds of 4 per cent milk. — 

 Answer, 



