HP 20B User Manual page 52

Table 7-1 Break-even Example
Keys
<=
To reset the menu items to their default values, with any item of the Break-even menu displayed press
BrkEven displayed, press
Display
I
to reset the menu, or
Description
Calculates the current value for the unknown item. 3200
units would have to be sold to return a profit of
10,000.00.
O
to cancel. Press
52
Break-even
:x
O
again to exit the menu.
. With