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.
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Question: Question: The average age of 31 students in a group is 16 years. when teacher's age is included to it, the average increases by one.What is the teacher's age in years?

 Option A: 31

 Option B: 36

 Option C: 48

 Option D: 45

 Option E: 57

Answer: Option C


Question: Question: A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 1/6 hours to fill the tank. The leak can drain all the water of the tank in?

 Option A: 17 hr

 Option B: 19 hr

 Option C: 10 hr

 Option D: 24 hr

 Option E: 26 hr

Answer: Option E


Question: Question: if 12401 is divided by any no. then quotient is 76 and remainder is 13.what is divisor?

 Option A: 154

 Option B: 124

 Option C: 153

 Option D: 163

 Option E: 183

Answer:
Option D