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    This might be asking a lot but could someone explain/show their working to show me how to get '2880' as the answer for question 2(c)(i)?
    Paper - http://filestore.aqa.org.uk/subjects...P-QP-JUN12.PDF
    Mark Scheme - http://filestore.aqa.org.uk/subjects...W-MS-JUN12.PDF
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    one escalator has the power of 4000W = 4kW

    The hours in the 6 day week are: 8x6 = 48hours in the week

    One escalator uses 4kw for 48 hours, so: 4 x 48 = 192kw of power in 48 hours = 192kwh

    1kwh = 15 pence

    192kwh = 15 x 192 =2880 pence
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    (Original post by SuchBants)
    one escalator has the power of 4000W = 4kW

    The hours in the 6 day week are: 8x6 = 48hours in the week

    One escalator uses 4kw for 48 hours, so: 4 x 48 = 192kw of power in 48 hours = 192kwh

    1kwh = 15 pence

    192kwh = 15 x 192 =2880 pence
    Thanks! I see where I went wrong!
 
 
 

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