instruction:
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.
question:
Question: The price of 2 sarees and 4 shirts is Rs. 1600. With the same money one can buy 1 saree and 6 shirts. If one wants to buy 12 shirts, how much shall he have to pay ?

 Option A: 4800

 Option B: none of these

 Option C: 3600

 Option D: 1200

 Option E: 2400
answer:
Option E


question:
Question: If a college has 15 staff for every 700 students, then what is the number of staff for 1400 students?

 Option A: 30

 Option B: 14

 Option C: 12

 Option D: 17

 Option E: 19
answer:
Option A


question:
Question: Seven years ago the average age of a family of 2 members was 23 years. A child has been born. due to Which the average age of the family is 23 years today. What is the present age of the child?

 Option A: 35years

 Option B: 32years

 Option C: 30years

 Option D: 25years

 Option E: 20years
answer:

Option B