TASK DEFINITION: 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.
PROBLEM: Problem: a 11 % stock yields 8 %. the market value of the stock is :
Options: a. rs. 72, b. rs. 137.50, c. rs. 112.50, d. rs. 116.50, e. none of these

SOLUTION: b

PROBLEM: Problem: a train 50 m long takes 6 sec to cross a man walking at 5 kmph in a direction opposite to that of the train. find the speed of the train ?
Options: a. 15 kmph, b. 25 kmph, c. 35 kmph, d. 45 kmph, e. 55 kmph

SOLUTION: b

PROBLEM: Problem: two trains each 120 m in length each, are running on two parallel lines in opposite directions. if one goes at the speed of 85 km / h while the other travels at 65 km / h. how long will it take for them to pass each other completely.
Options: a. 11.07 sec, b. 10.07 sec, c. 13.07 sec, d. 12.07 sec, e. 14.07 sec

SOLUTION:
b