Post a New Question

math

posted by on .

If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together?

  • math - ,

    work=rate*time

    worktotal=sallyrate*time + johnrate*time

    time= worktotal/(sallyrate +johnrate)

    = 1house/(house/4 + house/6)
    = 24/24 * 1/(1/4 + 1/6)
    = 24 * 1/(6 + 4)= 24/10 hrs

    check my thinking.

Answer This Question

First Name:
School Subject:
Answer:

Related Questions

More Related Questions

Post a New Question