The $72.99 backpack is a better choice to buy because
The $84.99 backpack for 1/3 off is approximately $28.3299 (about $28.33)
And the $72.99 backpack for 25% off is $18.2475 (about $18.25)
So since $18.25 < $28.33, the $72.99 backpack has a cheaper price.
