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: Two pipes A and B can fill a cistern in 20 and 30 minutes respectively, and a third pipe C can empty it in 40 minutes. How long will it take to fill the cistern if all the three are opened at the same time?

 Option A: 17 1/5

 Option B: 17 1/8

 Option C: 17 1/7

 Option D: 17 1/1

 Option E: 17 1/2

SOLUTION: Option C

PROBLEM: Question: Find the largest 4 digit number which isexactly divisible by 88?

 Option A: 4567

 Option B: 3588

 Option C: 9944

 Option D: 5465

 Option E: 6784

SOLUTION: Option C

PROBLEM: Question: Visitors to show were charged Rs.15 each on the first day. Rs.7.50 on the second day, Rs.2.50 on the third day and total attendance on the three days were in ratio 2:5:13 respectively. The average charge per person for the whole show is?

 Option A: 2

 Option B: 3

 Option C: 5

 Option D: 6

 Option E: 8

SOLUTION:
Option C