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: of the diplomats who attended a summit conference: 20 spoke japanese, 32 did not speak russian and 20 % of the diplomats spoke neither japanese nor russian. if 10 % of the diplomats spoke both japanese and russian, then how many diplomats attended the conference ?
Options: a. 70, b. 96, c. 108, d. 120, e. 150

SOLUTION: d

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: the average salary of all the workers in a workshop is $ 8000. the average salary of 7 technicians is $ 12000 and the average salary of the rest is $ 6000. the total number of workers in the shop is ?
Options: a. 15, b. 18, c. 21, d. 25, e. 31

SOLUTION:
c