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: 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: Find the average of all the numbers between 11 and 36 which are divisible by 5

Option A: 15

Option B: 20

Option C: 25

Option D: 30

Option E: 35

SOLUTION: Option C

PROBLEM: Question: If the sides of a cube are in the ratio 4:3. What is the ratio of their diagonals?

Option A: 4:3

Option B: 16:9

Option C: 64:27

Option D: 3:4

Option E: 3:8

SOLUTION:
Option A