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Maths Challenge Solutions

Mrs J Cole, HOD Mathematics —

Here are the solutions for this week's maths challenge:

  1. 3 minutes (You can boil them all in the same pot at once!)

  2. $60

  3. 20 times (7, 17, 27, 37, 47, 57, 67, 70, 71, 72, 73, 74, 75, 76, 77 (counts twice!), 78, 79, 87, 97)

  4. 42 (The pattern adds increasing even numbers)

  5. 7 pieces