Word Problems/curiuos

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Question
I have this word problem in this ASVAB test study book that I hope u can help me with.

  "A Lion runs 50 mph in pursuit of a Zebra running at 40 mph.  If the initial distance between them was a quarter of a mile, how long will it take the Lion to catch the Zebra?"
 By the way, this is a multiple choice problem & they are:

  A) 1.5 mins
  B) 1 min
  C) 2 mins
  D) 1 .5 hours
Can u please tell me how u got the answer as well.  Thank you

Answer
"A Lion runs 50 mph in pursuit of a Zebra running at 40 mph."
The distance between them decreases at the rate of 10 miles per hour (50 - 40 = 10).

"The initial distance between them was a quarter of a mile. How long will it take the Lion to catch the Zebra?"
0.25 mile (1 hour/10 miles) = 0.025 hour

1 hour = 60 minutes
0.025 hour 60 minutes/hour = 1.5 minutes

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Janet Yang

Expertise

Word problems are my favorite type of math questions! I would not feel comfortable answering questions that require specialized knowledge (Physics, Statistics, etc.) because I have not studied these in depth.

Experience

I tutor students (fifth through twelfth grades) and am a Top Contributor on Yahoo!Answers with over 24,000 math solutions.

Publications
Co-author of An Outline of Scientific Writing: For Researchers With English as a Foreign Language.

Education/Credentials
I have a Bachelor's degree in Applied Mathematics from the University of California at Berkeley, and a Master of Business Administration degree from The Wharton School.

Past/Present Clients
George White Elementary School. Homework Help program at the Ridgewood Public Library, Ridgewood, NJ. Individual students.

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