Gallery Problems Exercise

Three Scales

Work Time

Three Scales

Emma reads this information in a healthclub’s brochure:

“On our track, 1 mi equals 4 laps. On the same track, 1 km equals 2.5 laps.”

  1. Look at the image and use it to help you with the following:
    • Draw three number lines arranged as shown. Work carefully, and use a ruler.
    • Mark the Miles scale and the Kilometers scale so that the two scales show the same distance as the Laps scale.
  2. Use your triple number line to answer these questions:
    • Which is longer, a mile or a kilometer?
    • Approximately how many kilometers equal 1 lap?
    • Approximately how many miles equal 1 lap?
    • Approximately how many kilometers equal 1 mile?