Question

Two bicycle riders ride in opposite directions around a circular track, starting at the same time from the same point. Cyclist A rides at a speed of 3 kmph and cyclist B rides at a speed of 1 kmph. If the track has a diameter of 4 km, after how much time will the two cyclists meet?

Answer 1

Answer:

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. ... Relative speed of bikers = 16 + 14 = 30 kmph. Now, time=distancespeed = 40π30 = 4.18 hrs.