Upon pressing the <ENTER> key, the computer redisplays all entries

as well as the minimum number of acres which justify owning the harvester:
 A. PURCHASE PRICE $ -110000
 B. SALVAGE VALUE $.10000
 C. USEFUL LIFE 8 YEARS
 D. REPAIRS & MAINTENANCE $ 2500 /YEAR
 E. INSURANCE $ 1200 /YEAR
 F. INTEREST ON LOANS 13 %
 G. LABOR.AND FUEL $ 65 /ACRE
 H. CUSTOM RATE $ 130 /ACRE

 MINIMUM ACRES FOR OWNING HARVESTER 369

 LINE. TO CHANGE (A-H) OR Z TO END?

 In this example, the producer needs to harvest at least 369 acres to

justify owning the harvester. The last line on the display allows the user to

explore the results of other possible outcomes. For example, by typing an H

the computer will ask for a new custom rate:

 LINE TO CHANGE (A-H) OR Z TO END? H
 NEW CUSTOM RATE ($/ACRE) ? 150

Pressing the <ENTER> key clears the screen, redisplays the input values, and

shows the new minimum number of acres necessary for owning the harvester.
 A. PURCHASE PRICE $ 110000
 B. SALVAGE VALUE .$ 10000
 C. USEFUL LIFE 8 YEARS
 D. REPAIRS & MAINTENANCE $ 2500 /YEAR
 E. INSURANCE $ 1200 /YEAR
 F. INTEREST ON LOANS 13 %
 G. LABOR AND FUEL $ 65 /ACRE
 H. CUSTOM RATE $ 150 /ACRE

 MINIMUM ACRES FOR OWNING HARVESTER 282

 LINE TO CHANGE (A-H) OR Z TO END?

 In some cases, a negative number may result if the custom rate-per acre

is lower than the operating costs. When this happens, itis more profitable

to custom hire the entire harvest. This process can be repeated as often as
desired. To end the program, enter the letter Z.