Post a New Question

college algebra

posted by on .

sammy can complete programming job in 8 hours alone. marilyn can complete programming job in 12 hours alone. how many hours would it take if sammy and marilyn work together

  • basic algebra - ,

    There speeds of doing the job separately are 1/8 per hour and 1/12 per hour. Assuming they are working on the same job together and not duplicating work, their combined speed is 1/12 + 1/8 = 5/24 jobs per hour.

    The same assignment done together will take 1/(5/24) = 24/5 hours, which is 4 hours and 48 minutes.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question