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.)?
The Attempt at a Solution
I assumed 4 times... (Its G.C.S.E.)