TASK DEFINITION: You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.
PROBLEM: Question: A patient was given five pills which he is required to take one after every twenty minutes.
How long can the pills run for him?

 Option A: 1 hour

 Option B: 1 hour 20 minutes

 Option C: 1 hour 30 minutes

 Option D: 1 hour 35 minutes

 Option E: 1 hour 40 minutes

SOLUTION: Option B

PROBLEM: Question: If x persons take y days to complete z similar jobs, how long does it take y persons to complete 1 such job?

 Option A: z

 Option B: x

 Option C: x/y

 Option D: z/x

 Option E: x/z

SOLUTION: Option E

PROBLEM: Question: A person can swim in still water at 12 km/h. If the speed of water 10 km/h, how many hours will the man take to swim back against the current for 8km?

 Option A: 4

 Option B: 7

 Option C: 5

 Option D: 9

 Option E: 6

SOLUTION:
Option A