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13 November, 12:49

James bought 2 bottles of lemonade and 1 bag of crisps for £1.40. Jill bought 1 bottle of lemonade and 3 bags of crisps for £1.70 How much is a bottle of lemonade? How much is a bag of crisps?

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  1. 13 November, 12:55
    0
    Hence

    2L + C = 1.4

    -2L - 6C = - 3.4

    Add (This will eliminate 'L')

    -5C = - 2.0

    5C = 2.0

    C = 0.4 = £0.40p

    2L + 0.4 = 1.40

    2L = 1.40 - 0.40 = 1.00

    L = 0.50 = £0.50p.

    Hence a lemonade (L) costs £0.50p & a Crisps (C) costs £0.40p.
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