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: For all integers x>1. <x>=2x+(2x-1)+(2x-2)+......2+1. What is the value of <2>*<4>?

Option A: 60

Option B: 116

Option C: 210

Option D: 263

Option E: 360
answer:
Option E

question:
Question: It takes eight hours for a 600 km journey, if 120 km is done by train and the rest by car. It takes 20 minutes more, if 200 km is done by train and the rest by car. The ratio of the speed of the train to that of the car is?

Option A: 3:4

Option B: 7:6

Option C: 1:4

Option D: 5:4

Option E: 2:4
answer:
Option A

question:
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 %
answer:
Option A