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: | - 2 | ( | - 25 | - | 5 | ) = ? ? source: preparation material mba center
Options: a. 40, b. 60, c. 60, d. 75, e. 100
[EX A]: a

[EX Q]: Problem: a and b invests rs. 2500 and rs. 4000 respectively in a business. if a doubles his capital after 6 months. in what ratio should a and b divide that year ' s profit ?
Options: a. 11: 5, b. 15: 16, c. 15: 2, d. 9: 9, e. 11: 1
[EX A]: b

[EX Q]: Problem: a cistern has a leak which would empty the cistern in 20 minutes. a tap is turned on which admits 5 liters a minute into the cistern, and it is emptied in 24 minutes. how many liters does the cistern hold ?
Options: a. 480, b. 487, c. 481, d. 729, e. 600
[EX A]:
e