Texas Instruments BA II PLUS - Manual (Page 96)

92 Appendix — Reference Information
where: OLD =old value
NEW =new value
%CH =percent change
#PD =number of periods
Profit Margin
Breakeven
PFT = P Q N ( FC + VC Q )
where: PFT =profit
P =price
FC =fixed cost
VC =variable cost
Q =quantity
Days between Dates
With the Date worksheet, you can enter or compute a date within the
range January 1, 1950, through December 31, 2049.
Actual/actual day-count method
Note: The method assumes the actual number of days per month and
per year.
DBD (days between dates) = number of days II - number of days I
Number of Days I = ( Y 1 - YB ) Q 365
+ ( number of days MB to M1 )
+ DT1
+
Number of Days II =( Y 2 - YB ) Q 365
+ ( number of days MB to M2 )
+ DT2
+
Gross Profit Margin
Selling Price Cost –
Selling Price
----------------------------------------------- 100
×
=
Y1 YB –
( )
4
------------------------
Y2 YB –
( )
4
------------------------