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Texas Instruments BA-20 Profit Manager User Manual - Page 96

Gross Profit Margin, Selling Price, Profit Margin, Breakeven, Days between Dates

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where: OLD =old value NEW =new value %CH =percent change #PD =number of periods Profit Margin Gross Profit Margin = S----e--l--l--i-n----g----P---r--i--c---e---------C----o---s---t Selling Price × 100 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= (Y1 - YB) Q 365 + (number of days MB to M1) + DT1 + (---Y----1----------Y---B-----) 4 Number of Days II=(Y2 - YB) Q 365 + (number of days MB to M2) + DT2 + (---Y----2----------Y---B-----) 4 92 Appendix - Reference Information

Section	Page
BA II PLUS™ Calculator	1
Important Information	2
USA FCC Information Concerning Radio Frequency Interference	2
Overview of Calculator Operations	5
Turning On the Calculator	5
Turning Off the Calculator	5
Selecting 2nd Functions	6
Reading the Display	6
Setting Calculator Formats	8
Resetting the Calculator	10
Clearing Calculator Entries and Memories	10
Correcting Entry Errors	11
Math Operations	12
Memory Operations	16
Calculations Using Constants	17
Last Answer Feature	18
Using Worksheets: Tools for Financial Solutions	19
Time-Value-of-Money and Amortization Worksheets	25
TVM and Amortization Worksheet Variables	26
Entering Cash Inflows and Outflows	29
Generating an Amortization Schedule	29
Example: Computing Basic Loan Interest	30
Examples: Computing Basic Loan Payments	31
Examples: Computing Value in Savings	32
Example: Computing Present Value in Annuities	33
Example: Computing Perpetual Annuities	34
Example: Computing Present Value of Variable Cash Flows	35
Example: Computing Present Value of a Lease With Residual Value	37
Example: Computing Other Monthly Payments	38
Example: Saving With Monthly Deposits	39
Example: Computing Amount to Borrow and Down Payment	40
Example: Computing Regular Deposits for a Specified Future Amount	41
Example: Computing Payments and Generating an Amortization Schedule	42
Example: Computing Payment, Interest, and Loan Balance After a Specified Payment	43
Cash Flow Worksheet	45
Cash Flow Worksheet Variables	45
Uneven and Grouped Cash Flows	46
Entering Cash Flows	47
Deleting Cash Flows	47
Inserting Cash Flows	48
Computing Cash Flows	48
Example: Solving for Unequal Cash Flows	50
Example: Value of a Lease with Uneven Payments	52
Bond Worksheet	55
Bond Worksheet Variables	56
Bond Worksheet Terminology	58
Entering Bond Data and Computing Results	58
Example: Computing Bond Price and Accrued Interest	60
Depreciation Worksheet	61
Depreciation Worksheet Variables	61
Entering Data and Computing Results	63
Example: Computing Straight-Line Depreciation	65
Statistics Worksheet	67
Statistics Worksheet Variables	67
Regression Models	69
Entering Statistical Data	70
Computing Statistical Results	71
Other Worksheets	73
Percent Change/Compound Interest Worksheet	73
Interest Conversion Worksheet	76
Date Worksheet	78
Profit Margin Worksheet	80
Breakeven Worksheet	82
Memory Worksheet	84
Appendix - Reference Information	87
Formulas	87
Error Messages	98
Accuracy Information	99
AOS™ (Algebraic Operating System) Calculations	100
Battery Information	101
In Case of Difficulty	102
Texas Instruments Support and Service	103
Texas Instruments (TI) Warranty Information	104
Index	107
Symbols	107
Numerics	107
A	107
B	107
C	108
D	108
E	109
F	109
G	110
H	110
I	110
L	110
M	110
N	111
O	111
P	111
Q	112
R	112
S	112
T	113
U	113
V	113
W	113
X	113