Use a 70% discount coupon

OR

a 40% discount, 20% discount, then 10% discount coupon

**on your entire purchase?**

h/t @robertkaplinsky

Whichever answer you choose, justify your reasoning with mathematics.

If you would like a version of the image without the percents so you can manipulate them easier, please let me know.

*Related*

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brian alexanderUse a 70% discount coupon

Markashia Batesuse a 70% discount because a 40% discount then 20% discount then 10% discount is wayyyy to much

Tia70% discount