Find the median of the following set of numbers: 5, 9, 1, 2, 10, 3, 11, 1 cup of tea and 3 slices of cake cost £3.80. 1 cup of tea and a slice of cake cost £1.60. Work out the cost of 1 cup of tea., Work out 11 - 2 x 4, Share £80 in the ratio 3:5, Find the perimeter of a rectangle whose width is 8cm and whose height is 4cm., Simplify 4a + 8a - 2a.

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