Answer:
100
Step-by-step explanation: I actually had this question and couldn't find the answer anywhere but it tricks you by saying (The cost of an item is 100% of its price. What number goes in place of (?) in the addition problem?) so it literally tells you the answer. (?% of cooler price + 6% of cooler price (tax) = ?% of cost ($7.95))
in the equation, it shows the cooler price as a percentage