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A coffee urn holds 12 litres when full. Harry fills coffee cups from the urn until the coffee runs out.
A)How many 140mls cups of coffee can be filled from the urn?
B)At the end there is not enough coffee left to fill a cup, Harry decides to drink it himself. How much coffee is there left for him?

  • Maths -

    Number of cups
    = 12*1000 ml / 140 ml/cup
    = 85.71 cups
    So there were 85 cups and 0.71*140=100 ml for him to drink.

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