The task is to generate the correct answer for a given math problem.

[EX Q]: Problem: when a merchant imported a certain item , he paid a 7 percent import tax on the portion of the total value of the item in excess of $ 1,000 . if the amount of the import tax that the merchant paid was $ 94.50 , what was the total value of the item ?
[EX A]: $ 2,350

[EX Q]: Problem: three 7 faced dice are thrown together . the probability that all the three show the same number on them is ?
[EX A]: 1 / 49

[EX Q]: Problem: a case of 12 rolls of paper towels sells for $ 9 . the cost of one roll sold individually is $ 1 . what is the percent w of savings per roll for the 12 - roll package over the cost of 12 rolls purchased individually ?
[EX A]:
25 %