DAIRY ARITHMETIC PROBLEMS. (71) 



1. What is the percentage of total solids in milk testing 4.9 and having 

 a lactometer reading of 33 at 57° F.? (Rule 5, B.) 



2. What would be the correct specific gravity of a sample of milk if the 

 lactometer gave a reading of 32.5 at 65° F.? (Rule 12.) 



3. What is condition of each of the following samples : 



(a) Lactometer reading 32 at 58° F., and has 4 per cent fat. 



(b) Lactometer reading 30 at 63° F., and has 3.5 per cent fat. 



(c) Lactometer reading 27.4 at 69° F., and has 2.4 per cent fat. 



4. How many pounds of solids not fat in 139 pounds of milk testing 3.9 

 per cent fat and haying a lactometer reading of 29 at 69° F.? 



5. How many pounds of total solids are there in 49 pounds of milk 

 having a fat test of 4.17 per cent and a lactometer reading of 32.4 at 56° F.? 



6. How many pounds of milk testing 3 per cent must be mixed with 

 140 pounds cream, testing 27 per cent, to make milk testing 5.1 per cent? 

 (Rule 10.) 



7. Two thousand pounds of milk testing 3.5 per cent fat, is to be made to 

 test 4 per cent by adding milk that tests 5 per cent. How many pounds will 

 be added? (Rule 12.) 



8. One thousand pounds of cream testing 30 per cent is to be reduced to 

 20 per cent by adding whole milk testing 4 per cent. How many pounds of 

 the milk must be added? 



9. One thousand pounds of cream testing 30 per cent is to be reduced 

 to 25 per cent by adding milk testing 2.5 per cent. How many pounds of 

 the milk must be added? 



10. One thousand pounds of cream testing 30 per cent is to" be reduced 

 to 25 per cent by adding skimmilk. How many pounds of skimmilk must be 

 added? 



11. Six hundred pounds of 30 per cent cream is wanted. Having cream 

 on hand testing 40 per cent, and skimmilk, find how many pounds of each 

 are needed to produce 600 pounds of 30 per cent cream. 



12. How many pounds each of 50 per cent cream and 25 per cent cream 

 must be mixed together to produce 1,000 pounds of cream testing 40 per cent? 



13. One thousand pounds of cream testing 50 per cent is to be diluted to 

 make it test 40 per cent, using cream testing 25 per cent. How many pounds 

 of the 25 per cent cream must be added to give the desired test? 



14. One thousand pounds of cream testing 25 per cent is to be raised 

 to 40 per cent with cream testing 50 per cent. Find how many pounds of 

 the 50 per cent cream must be added to the 25 per cent cream to make it 

 test 40 per cent. 



