1542 The Cornell Reading-Courses 



Problem 24: 



A creamery receiving 900 pounds of fat daily is making an overrun of 

 18 per cent. The butter has been selling for 25 cents per pound. Which 

 would be more profitable: to increase the overrun to 20 per cent, or to 

 secure an advance in price of ^ cent per pound? Compute this in one 

 day's make. 



900 X .02 = 18, number of pounds increase in overrun 



$.25 X 18 = $4.50, amount gained by increasing overrun 



900 X .18 = 162, weight in pounds of overrun 



900 lbs. + 162 lbs. = 1,062 lbs. butter 



$.005 X 1,062 = $5.31, amount gained by increasing price 



$5.31 — $4.50 = $.81 per day, or $24.30 per month, in favor of securing 

 an advance in price. Answer. 



butter yield of cream 

 Problem 25: 



How much cream testing 30 per cent will it be necessary to chum in 

 order to produce 360 pounds of butter, overrun on fat 20 per cent? 



Since there is an overrun of 20%, a certain number of pounds of fat 

 must have been multiplied by 1.20 in order to produce 360 lbs. of butter. 



? lbs. of fat X 1.20 = 360 



Therefore, 360 -r- 1.20 = 300, number of pounds of fat 



It now remains to find the niunber of pounds of 30% cream from which 

 the fat was taken. 



? lbs. cream X .30 = 300 



Therefore, 300 4- .30 = 1,000, number of pounds of 30% cream. 

 Answer. 



value of salted vs. unsalted butter 

 Problem 26: 



A creamery that has been receiving 1,000 pounds of fat daily has been 

 making salted butter and getting an overrun of 18 per cent. It has an 

 offer of an increase in price from 2 5 cents to 2 5^ cents for unsalted butter. 

 Considering that the overrun would be 2I per cent less for unsalted butter, 

 which is the better proposition? 



1,000 X .18 = 180, number of pounds overrun for salted butter 



1,000 (lbs. fat) + 180 (lbs. overrun) = 1,180, number of pounds butter 



$.25 X 1,180 = $295, value of salted butter 



1,000 X -155 = I SSs number of pounds overrun for unsalted butter 



1,000 (lbs. fat) + 155 (lbs. overrun) = 1,155, number of pounds butter 



$.255 X 1,155 = $294.52, value of unsalted butter 



$295.00 — $294.52 = $.48, in favor of the salted butter. Answer. 



