जॉइन Examsbookउत्तर : 3. "4.18"
Two bike riders ride in opposite directions around a circular track, starting at the same time from the same point. Biker A rides at a speed of 16 kmph and biker B rides at a speed of 14 kmph. If the track has a diameter of 40 km, after how much time (in hours) will the two bikers meet?5
प्र: Two bike riders ride in opposite directions around a circular track, starting at the same time from the same point. Biker A rides at a speed of 16 kmph and biker B rides at a speed of 14 kmph. If the track has a diameter of 40 km, after how much time (in hours) will the two bikers meet?
- 16.52false
- 28.14false
- 34.18true
- 45.02false
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उत्तर : 3. "4.18"
व्याख्या :
Answer: C) 4.18 Explanation: Distance to be covered = πD = 40π km Relative speed of bikers = 16 + 14 = 30 kmph. Now, time=distancespeed = 40π30 = 4.18 hrs.