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.

[EX Q]: Question: In what time will a train 200 m long cross an electric pole, it its speed be 144 km/hr?

 Option A: 2 sec

 Option B: 2.7 sec

 Option C: 3.5 sec

 Option D: 5 sec

 Option E: 9.5 sec
[EX A]: Option D

[EX Q]: Question: Total dinning bill for 8 people was $211.00.If they add 15% tip and divided the bill evenly ,approximate.What was each persons find share

 Option A: $30.14

 Option B: 45.14

 Option C: 34.66

 Option D: 32.29

 Option E: 30.33
[EX A]: Option E

[EX Q]: Question: A merchant marks his goods up in such a way that the profit made on selling 30 articles is equal to the cost price of 20 articles. What is the % Q profit made by the merchant?

 Option A: 66.67 %

 Option B: 50 %

 Option C: 200 %

 Option D: 100 %

 Option E: 33.33 %
[EX A]:
Option A