The "+ Pct" is used for percentage calculations for a fixed, often used percentage. Calculating sales tax is a good application for the "+ Pct" key.
You store the sales tax rate once, then you can calculate the tax and total with tax with one key stroke.
These examples use the Math: General Calculator
To | Press (ALG or RPN) | Display x | Display y |
---|---|---|---|
Store a percentage of 6.75% | 6.75 STO Pct | 6.75 | |
Calculate "tax and total" on 100 | 100 +Pct | 106.75 | 6.75 |
Calculate "tax and total" on 95.26 | 95.26 +Pct | 101.69 | 6.43 |
In RPN Mode, the y value is displayed if you have more than 1 row of the stack displayed.
In ALG mode, tap SWAP to see the y value. Pressing SWAP swaps the x and y registers.
The "+ x%" Key is similar to the "+ Pct key except that you enter the rate to be used in the x register to calculate % plus total.
To | Press (ALG) | Press (RPN) | Display x | Display y |
---|---|---|---|---|
Calculate "tax and total" on 100 with 6.75% tax rate | 100 = 6.75 [+x%] | 100 ENTER 6.75 [+x%] | 106.75 | 6.75 |
Calculate "tax and total" on 95.26 with 6.5% tax rate | 95.26 = 6.5 [+x%] | 95.26 ENTER 6.5 [+x%] | 101.45 | 6.19 |