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- Abe Mantell

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!

Over 15 years teaching at the college level.

NCTM, NYSMATYC, AMATYC, MAA, NYSUT, AFT.

B.S. in Mathematics from Rensselaer Polytechnic Institute

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

User | Date | K | C | P | Comments |
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Kenneth | 01/01/17 | 10 | 10 | 10 | Thanks for the reply and answer! I ..... |

Kenneth | 12/28/16 | 10 | 10 | 10 | Thanks for the reply and explanation! |

Patricia | 08/28/16 | 10 | 10 | 10 | Thank you very much for your answer! |

Kenneth | 08/23/16 | 10 | 10 | 10 | Thanks for the reply! |

Kenneth | 08/20/16 | 10 | 10 | 10 | Thanks for the great reply and helpful ..... |

The 39,000 man-hrs is the amount of work done or to be done. So, it could mean 39,000 men work for 1 hour, or 3900 men work for 10 hrs, or 390 men work for 100 hrs, or 39 men work for 1000 hrs, or as

Here's one way... 195 men x 10 hrs/day x 20 days = 39000 man-hrs was required to complete the job. That means the job requires 39000 man-hours. if each man work 15 days for 13 hrs/day, then he works

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

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

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

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