Given a math problem with context and a question and 5 answer choices, the task is to provide the correct answer choice based on the problem. You must choose one of the given answer choices by letter: a, b, c, d, or e; anything else is invalid.

[EX Q]: Problem: in town x, 64 percent of the population are employed, and 47 percent of the population are employed males. what percent of the employed people in town x are females ?
Options: a. 16 %, b. 46 %, c. 32 %, d. 24 %, e. 52 %
[EX A]: d

[EX Q]: Problem: heinz produces tomato puree by boiling tomato juice. the tomato puree has only 20 % water while the tomato juice has 90 % water. how many liters of tomato puree will be obtained from 25 litres of tomato juice ?
Options: a. 2.8 liters., b. 3.125 liters., c. 8.5 liters., d. 2.6 liters., e. 2.1 liters.
[EX A]: b

[EX Q]: Problem: a and b together can complete a work in 12 days. a alone complete it in 20 days. if b does the work only for half a day daily, then in how many days a and b together will complete the work ?
Options: a. 110 days, b. 11 days, c. 15 days, d. 20 days, e. 17 days
[EX A]:
c