a recursive function to calculate compounding discount
discount rate: $1.50
gas surcharge: $0.35
stops | discount | cost | per stop |
---|---|---|---|
1 | $1.50 | $8.50 | $8.50 |
2 | $3.80 | $16.20 | $8.10 |
3 | $7.25 | $22.75 | $7.58 |
4 | $11.85 | $28.15 | $7.04 |
5 | $17.60 | $32.40 | $6.48 |
6 | $24.50 | $35.50 | $5.92 |