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31 January, 07:40

Liz buys x markers at 90p each and 3 books at 1.20 each the total cost is 13.50

Solve to find x

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  1. 31 January, 09:52
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    90p = 0.9

    13.5 = 0.9x+3*1.2

    0.9x = 13.5-3.6

    0.9x = 9.9

    x = 11
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