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18 December, 04:52

electricity has two different rates off peak is 10pm to 6am and charged at 8p per hour. peak is 6am to 10pm and is charged at 12p per hour. alison turns uses electricity from 8pm to 11:30 pm. what is the dost of her electricity for that period

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  1. 18 December, 05:38
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    32p

    Step-by-step explanation:

    the times between 8pm and 11.30pm are:

    8pm, 9pm, 10pm, 11pm, 11.30pm.

    so, find the cost associated with each of them:

    8pm: 12p

    9pm: 12p

    10pm: 12p

    11pm:8p

    11.30pm: 4p

    sum:12+12+12+8+4 = 12 x 4 = 32p
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