Word Problems/Expert Profile

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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 in the area

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


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


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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    K = Knowledgeability    C = Clarity of Response    P = Politeness
Gabriel02/27/171010thanks. I understand but I would have .....
Kenneth11/03/16101010Thanks for the reply!
Kenneth10/30/16101010Thanks for the explanation and reply!
Matthew09/18/16101010Very helpful and insightful!! Thanks a lot!

Recent Answers from Janet Yang

2017-02-26 word problem:

Aiden began with n fruit.   His friend received (⅕)n fruit, leaving Aiden with (⅘)n fruit.  His sister received ()(⅘)n fruit, leaving Aiden with ()(⅘)n fruit.    ()(⅘)n

2016-11-01 Compound Proportions:

Your conversion factor is the speed of work, i.e., amount of time per job.   men days gives you the amount of time  houses is the number of jobs  so the speed of work is the number of man-days per house

2016-10-28 Compound Proportions:

195 workers 20 days = 3,900 worker-days  3,900 worker-days (10 hours)/day = 39,000 worker-hours  The job takes 39,000 worker-hours to complete the job.    W workers 15 days (13 hours)/day = 195W

2016-09-07 Rates:

"20 workers can paint 5 houses in 10 days."  20 workers 10 days = 200 worker-days  (200 worker-days)/(5 houses) = (40 worker-days)/house    2 houses (40 worker-days)/house = 80 worker-days  (80 worker-days)/(8

2016-07-29 Unit Rates:

Depends on the phrasing of the question, i.e., what you're trying to solve for.  Without seeing the question, I'm guessing you need to determine how long it would take a certain number of men to paint


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