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 one-third of one-fourth of a number is 15, then three-tenth of that number is

 Option A: 35

 Option B: 36

 Option C: 45

 Option D: 54

 Option E: 57

SOLUTION: Option D

PROBLEM: Question: The area of a parallelogram is 72sq m and its altitude is twice the corresponding base. Then the length of the base is?

 Option A: 6

 Option B: 9

 Option C: 7

 Option D: 62

 Option E: 2

SOLUTION: Option A

PROBLEM: Question: If 10 men do a work in 80 days, in how many days will 20 men do it?

 Option A: 18 days

 Option B: 38 days

 Option C: 40 days

 Option D: 48 days

 Option E: 50 days

SOLUTION:
Option C