Word Problems/Expert Profile

Abe Mantell

On Vacation
returns 12/25/2016

Hello, I am a college professor of mathematics and regularly teach all levels from elementary mathematics through differential equations, and would be happy to assist anyone with such questions!

Experience in the area

Over 15 years teaching at the college level.




B.S. in Mathematics from Rensselaer Polytechnic Institute
M.S. (and A.B.D.) in Applied Mathematics from SUNY @ Stony Brook

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
Patricia08/28/16101010Thank you very much for your answer!
Kenneth08/23/16101010Thanks for the reply!
Kenneth08/20/16101010Thanks for the great reply and helpful .....
Kenneth08/01/16101010Thanks for the reply and information!

Recent Answers from Abe Mantell

2016-09-15 Speed Word problems:

I gather you meant ""How LONG does it take to travel..."  not "How FAR does it take to travel..." -- yes?    Also, you have that the boy gets back to AZ at 15:15 AM??  What is 15:15 AM???  15:15 would

2016-08-27 Math:

Hello Patricia,    Mathematically, it is true -- based on percentages.  But I suspect that there is more to this  than simple percentages.  Is the expected return directly proportional to the amounts you

2016-08-23 Rates:

Sorry, I did not notice the original question.  I need to revise my previous answer.    Let's look at from another point of view.  20 men can paint 5 houses in 10 days = 1 man can paint 5/20=1/4 of a house

2016-08-19 Price Increase:

I believe the conventional thinking, and I concur, is the greater percentage increase is the better performer.    Consider extreme cases... suppose a $100 stock increases by $10, which is 10%... vs a $1

2016-07-30 Unit Rates:

5 houses by 20 men, gives a rate of 5/20 = 1/4 of a house per man in 10 days.  Thus, per day it is (1/4)/10 or 1/40 of a house per man per day.    So, 40 men work at the rate of 40(1/40) house per day


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