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: two guys a and b leave point a and point b simultaneously and travel towards point b and point a on the same route at their respective constant speeds. they meet along the route and immediately proceed to their respective destinations in 32 minutes and 50 minutes respectively. how long will b take to cover the entire journey between point b and point a ?
Options: a. 65, b. 90, c. 70, d. 75, e. 80
[EX A]: b

[EX Q]: Problem: if x is 20 percent more than y and y is 60 percent less than z, then x is what percent of z ?
Options: a. 500 %, b. 48 %, c. 500 / 3 %, d. 125 %, e. 60 %
[EX A]:
b