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

[Q]: Problem: if the sides of a triangle are 26 cm , 24 cm and 15 cm , what is its area ?
[A]: 180


[Q]: Problem: 300 first - time customers of a fashion store were surveyed for their shopping experience right after leaving the store . 60 % of the customers in the survey had purchased clothes for less than $ 100 . 40 % of the customers in the survey reported they were overall satisfied with their purchase . 45 % of the customers that had purchased clothes for less than $ 100 reported they were overall satisfied with their purchase . what percent of the customers surveyed purchased clothes for at least $ 100 and reported that they were not overall satisfied with their purchase ?
[A]: 13


[Q]: Problem: one half of a two digit number exceeds its one third by 9 . what is the sum of the digits of the number ?
[A]:
d ) 9