Design Stage I

Design Stage II

Version 1.0

Version 1.1

Design Stage I

Design Stage III

TipEM Design Timeline

TipEM Totaling Modes - Explained

Exact Tip Calculation

Bill total                       123.56

Apply tip %                15% * 123.56

Tip                                18.53

Total Paid                    142.08

Mirror

Tip                      18.69

Total Paid          142.24

Actual Tip         15.1%

Round

Tip                      19.45

Total Paid          143.00

Actual Tip         15.7%

Sum

Tip                      18.52

Total Paid          142.07

Actual Tip          15%

Calculates the tip based on your exact percentage specification.

The tip is based on your percentage specification, but the tip is adjusted to make the Total Paid a whole number.

The tip is based on your percentage specification, but the tip is adjusted to make the Total Paid reflect across the decimal.

The tip is based on your percentage specification.  Total is adjusted so the cents’ amount is equal to the sum of the place value holders to left of decimal.

Version 1.2.1