Answer:
2. Half a lap, 0.5 or 1/2
3. 20/0.5 or 20/(1/2)
Step-by-step explanation:
Since it takes 40 seconds to skate 1 lap,
20 secs would be 20/40 laps, which is 1/2
Ratio is time/number of laps. So, 20/(1/2)
