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  • M
    mathsbrain posted the thread pls help in Years 9 & 10.
    Question: Sugar is dissolved in water in the ratio 1:3 to form sugar syrup. This sugar syrup is further diluted with the addition of...
  • M
    mathsbrain posted the thread AMC practice in Years 9 & 10.
    Hi can anyone explain the following? Two identical coins are placed one inside and one outside a thin circular wire, which has twice...