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.
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Question: Question: The original price of a shirt was $20. It was decreased to $15 . What is the percent decrease of the price of this shirt.

 Option A: 25%

 Option B: 35%

 Option C: 45%

 Option D: 55%

 Option E: 65%

Answer: Option A


Question: Question: A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 1/6 hours to fill the tank. The leak can drain all the water of the tank in?

 Option A: 17 hr

 Option B: 19 hr

 Option C: 10 hr

 Option D: 24 hr

 Option E: 26 hr

Answer: Option E


Question: Question: Edward walks along Sunrise Boulevard daily. He starts walking at 07:00 from block 10 and walks to block 90 where he turns around and walks back to block 70, where he stops at 07:10. The blocks along the boulevard are numbered sequentially (1,2,3), and each block measures 16 meters. What is Edward's speed in meters per minute?

 Option A: 108

 Option B: 160

 Option C: 198

 Option D: 216

 Option E: 252

Answer:
Option B