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: Pipe A can fill a tank in 16 minutes and pipe B cam empty it in 24 minutes. If both the pipes are opened together after how many minutes should pipe B be closed, so that the tank is filled in 30 minutes?

Option A: 20

Option B: 16

Option C: 24

Option D: 28

Option E: 21
[A]: Option E

[Q]: Question: A can run 2 km distance in 2 min 20 seconds, while B can run this distance in 3 min 5 sec. . By how much distance can A beat B?

Option A: 900 m

Option B: 500 m

Option C: 120 m

Option D: 180 m

Option E: 190 m
[A]: Option B

[Q]: Question: What profit percent is made by selling an article at a certain price, if by selling at 2/3rd of that price, there would be a loss of 16%?

Option A: 26%

Option B: 28%

Option C: 27%

Option D: 40%

Option E: 70%
[A]:
Option A