AboutAbe Mantell Expertise 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 Over 15 years teaching at the college level.
Organizations belong to NCTM, NYSMATYC, AMATYC, MAA, NYSUT, AFT.
Education/Credentials B.S. in Mathematics from Rensselaer Polytechnic Institute
M.S. (and A.B.D.) in Applied Mathematics from SUNY @ Stony Brook
Question if a person can pull 17 parts in a hour and same person can pack 20 parts in a hour how many he can pull and pack in a given hour
Answer Do you mean how many can he "pull" and then "pack" if he must pack all the ones he pulls? If so, then let x=the number of parts.
It takes x/17 hrs to pull them, and x/20 hrs to pack them.
So the total time is x/17 + x/20 hrs...which we want to equal 1 hr.
So, x/17 + x/20 = 1 ==> x=340/17 or about 9.2 (9 if rounding off).
