The wolf chased the hare when there was a distance of 60 m between them. After 3 s, the distance became 51 m

The wolf chased the hare when there was a distance of 60 m between them. After 3 s, the distance became 51 m. After what time did the wolf catch up with the hare?

1) 60 – 51 = 9 (m) – the distance between the wolf and the hare was reduced
2) 9: 3 = (m / s) – approach speed
3) 60: 3 = 20 (s) – time
Answer: after 20 seconds

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