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: 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: a cricketer whose bowling average is 12.4 runs per wicket takes 5 wickets for 26 runs and there by decreases his average by 0.4. the number age of the family now is :
Options: a. 18, b. 17, c. 76, d. 85, e. 86
[EX A]: d

[EX Q]: Problem: it is the new year and mandy has made a resolution to lose weight this year. she plans to exercise and do yoga. for exercise she plans to workout at the gym and ride her bicycle in the ratio of 2: 3 everyday. she will also do yoga in the ratio, yoga: exercise = 2: 3. if she rides her bike for 18 minutes, how much time will she spend doing yoga ? ( rounded to minutes )
Options: a. 30 min., b. 41 min., c. 17 min., d. 23 min., e. 25 min.
[EX A]:
a