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: A candidate got 32% of the votes polled and he lost to his rival by 1908 votes. How many votes were cast?

Option A: 5100

Option B: 5200

Option C: 5300

Option D: 5400

Option E: 5500
answer:
Option C

question:
Question: Car 'X' covers a distance of 385 kms in 7 hours and car 'Y' covers a distance of 715 kms in 13 hrs. What is the difference in the speed of the two cars?

Option A: 2kms/hr

Option B: 1km/hr

Option C: 3kms/hr

Option D: 5kms/hr

Option E: None of these
answer:
Option E

question:
Question: It takes Avery 3 hours to build a brick wall while Tom can do it in 5 hours. If the two start working together and after an hour Avery leaves, how much time will it take Tom to complete the wall on his own?

Option A: 100

Option B: 110

Option C: 120

Option D: 130

Option E: 140
answer:
Option E