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Australian AMC 2017 - Intermediate Question 14

AMC AUSTRALIA · Australian AMC 2017 - Intermediate

Question 14

Gwen’s boots have 5 pairs of holes for the laces. Opposite holes are 4 cm apart and the first and last hole on each side are 12 cm apart. Gwen laces and ties each boot as shown, where the knot and bow use a total of 40 cm of bootlace. Approximately how long is the lace?

Question illustration
  1. 60 cm
  2. 70 cm
  3. 80 cm
  4. 90 cm
  5. 100 cm