Well, as far as I can tell, the mean (average) is the best representation of the data because there is no outlier (a number a lot higher or lower than the rest of the numbers that throws the data off).
So it's 2.40 subtract 2, which is 0.4
then put it over 2, you get 0.4/2, which is equal to 0.2
0.2= 20% so it's 20% of increase
50 coupons for $3 dollars off = 50 * 3 = $ 150 worth of discounts
25 questions
Explanation: 20 divided by 25 is .8 which is 80%
