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: ages of two persons differ by 20 years. if 6 year ago, the elder one be 3 times as old the younger one, find their present age
Options: a. 12,28, b. 14,30, c. 16,36, d. 18,34, e. 19,34

SOLUTION: c

PROBLEM: Problem: a and b together can complete work in 6 days. a alone starts working and leaves it after working for 4 days completing only half of the work. in how many days it can be completed if the remaining job is undertaken by b ?
Options: a. 4, b. 12, c. 5, d. 6, e. 7

SOLUTION: b

PROBLEM: Problem: equal amount of water were poured into two empty jars of different capacities, which made one jar 1 / 3 full and other jar 1 / 2 full. if the water in the jar with lesser capacity is then poured into the jar with greater capacity, what fraction of the larger jar will be filled with water ?
Options: a. 2 / 3, b. 2 / 7, c. 1 / 2, d. 7 / 12, e. 1 / 7

SOLUTION:
a