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 car is 15 minutes late by running at a speed of 4 / 5 th of its actual speed. the actual time taken by the car to cover that distance is :
Options: a. 30 minutes, b. 1 hour, c. 2 hours, d. 3 hours, e. none of these

SOLUTION: b

PROBLEM: Problem: the average runs scored by a batsman in 20 matches is 40. in the next 10 matches the batsman scored an average of 30 runs. find his average in all the 30 matches ?
Options: a. 31, b. 36.67, c. 88, d. 13, e. 12

SOLUTION: b

PROBLEM: Problem: a man engaged a servant on the condition that he would pay him rs. 500 and a uniform after one year service. he served only for 9 months and received uniform and rs. 300, find the price of the uniform ?
Options: a. s. 80, b. s. 85, c. s. 90, d. s. 300, e. s. 120

SOLUTION:
d