Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: What does it mean?

  1. Jun 25, 2012 #1
    1. The problem statement, all variables and given/known data
    Mrs keely has 3 small children. She runs her washing machine every day, even on weekends.How much does it cost Mrs Keely to run a 2kWh machine per year?
    How many times is she running it 4, once or 2 (as the 3 small children count as 1 adult.)?

    3. The attempt at a solution
    I assumed 4 times... (Its G.C.S.E.)
  2. jcsd
  3. Jun 26, 2012 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi Ryanzmw! :smile:
    "She runs her washing machine every day" must mean once every day. :wink:

    (it can't be less, and if it was more, the question would say so)

    (if it said "she buys an apple every day", would you worry that it might mean that she buys several apples a day?)
  4. Jun 26, 2012 #3


    User Avatar
    Gold Member

    you're going to have a hard time figuring out an output cost for this question since no input cost is given
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook