(12C Platinum) Successive Discounts

[Dieter]

(12-23-2018 09:11 AM)Werner Wrote:  (1 + i%/100)*(1+j%/100) = 1 + (i%+j%+i%*j%/100)/100

So,
In:
Y: i%
X: j%
Out
X: i%+j%+i%*j%/100

Yes, that's the term in square brackets in Gamo's formula.
Except the sign which has to be negative here – we are calculating discounts.

Using your suggestion, the complete program can be as short as this:

Code:

01 %
02 CHS
03 LstX
04 +
05 +
06 %
07 -

1000 [ENTER] 5 [ENTER] 10
[R/S] => 855,00  (discounted price)
[Δ%] => –14,50  (total discount in %)

But it still works only for two discount rates.

Dieter