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: what is the sum of natural numbers between 30 and 100
Options: a. 4615, b. 4860, c. 5000, d. 5500, e. 5550

SOLUTION: a

PROBLEM: Problem: a statue is being carved by a sculptor. the original piece of marble weighed 180 kg. in the first week 28 percent is cut away. in the second week 18 percent of the remainder is cut away. in the third week the statue is completed when 20 percent of the remainder is cut away. what is the weight of the final statue ?
Options: a. 105 kg, b. 85 kg, c. 108 kg, d. 125 kg, e. 117 kg

SOLUTION: b

PROBLEM: Problem: speed of a boat in standing water is 14 kmph and the speed of the stream is 1.2 kmph. a man rows to a place at a distance of 4864 km and comes back to the starting point. the total time taken by him is :
Options: a. 700, b. 200, c. 540, d. 120, e. 635

SOLUTION:
a