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.

Q: Question: A man rows to a place 48 km distant and come back in 14 hours. He finds that he can row 4 km with the stream in the same time as 3 km against the stream. The rate of the stream is:

Option A: 2 km/hr

Option B: 1 km/hr

Option C: 4 km/hr

Option D: 6 km/hr

Option E: 5 km/hr

A: Option B
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Q: Question: The ratio between the number of passengers travelling by I and II class between the two railway stations is 1 : 50, whereas the ratio of I and II class fares between the same stations is 3 : 1. If on a particular day Rs. 1,325 were collected from the passengers travelling between these stations, then what was the amount collected from the II class passengers?

Option A: Rs. 750

Option B: Rs. 1000

Option C: Rs. 850

Option D: Rs. 1250

Option E: None of these

A: Option D
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Q: Question: The average of 15 numbers is calculated as 20. It is discovered later on that while calculating the average, one number namely 36 was wrongly read as 26. The correct average is?

Option A: 30

Option B: 26

Option C: 16

Option D: 97

Option E: 12

A:
Option A
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