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: in an office, totally there are 2800 employees and 25 % of the total employees are males. 30 % of the males in the office are at - least 50 years old. find the number of males aged below 50 years ?
Options: a. 390, b. 490, c. 400, d. 460, e. none of these

SOLUTION: b

PROBLEM: Problem: lloyd normally works 7.5 hours per day and earns $ 3.50 per hour. for each hour he works in excess of 7.5 hours on a given day, he is paid 1.5 times his regular rate. if lloyd works 10.5 hours on a given day, how much does he earn for that day ?
Options: a. $ 33.75, b. $ 42.00, c. $ 51.75, d. $ 54.00, e. $ 70.00

SOLUTION: b

PROBLEM: Problem: two goods trains each 500 m long are running in opposite directions on parallel tracks. their speeds are 50 km / hr and 30 km / hr respectively. find the time taken by the slower train to pass the driver of the faster one ?
Options: a. 22, b. 27, c. 45, d. 99, e. 12

SOLUTION:
c