A cat climbs a 21 m pole. It climbs 3 m and slips 1 m every minute. How long will it take to reach the top?
- A. 21 min
- B. 18 min
- C. 19 min
- D. 20 min
✅ Correct Answer: 19 min
Explanation
In $2$ minutes, net climb is $2$ m In $18$ minutes, climb is $18$ m In next minute, cat climbs $3$ m Total time $= 18 + 1 = 19$ minutes
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