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The monthly standing charge for a electrical company is €12.50 plus a cost of €0.16 per unit of electricity used.
A customers monthly bill was €156.18. Determine how many units of electricity the customer used in that month.

  • maths -

    I not sure but I think you do
    156.18-12.50=
    and then I think you divide the answer by 0.16

  • maths -

    You're right.

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