## 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.”**

- 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.

- 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?