Answer: 900 times
Explanation:
1 kilometer = 1000 meters
1.8 kilometers = 1000 × 1.8
1.8 kilometers = 1800 meters
2 meters = 1 click
1800 meters = 1800 ÷ 2
1800 meters = 900 clicks
The wheel will click 900 times when Ty walks 1.8 kilometers.
Hope this helped!