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

[EX Q]: Problem: zachary is helping his younger brother , sterling , learn his multiplication tables . for every question that sterling answers correctly , zachary gives him 3 pieces of candy . for every question that sterling answers incorrectly , zachary takes away two pieces of candy . after 6 questions , if sterling had answered 2 more questions correctly , he would have earned 31 pieces of candy . how many of the 6 questions did zachary answer correctly ?
[EX A]: 7

[EX Q]: Problem: the ratio of a to b is 4 to 5 , where a and b are positive . if x equals a increased by 25 percent of a , and m equals b decreased by 60 percent of b , what is the value of m / x ?
[EX A]: 2 / 5

[EX Q]: Problem: if the sides of a rectangle are increased by 35 % , what is the percentage increase in the area ?
[EX A]:
82.25 %