Question

plz tell me the correct option​

Answer 1

Answer:

(c)I think this helps you

Answer 2

Answer:

(C) 15 minutes

Explanation:

Let the speed of each bus = v km/h

The distance between the nearest buses plying on either car = vT km

For buses going from town A to B:

Relative speed of bus in the direction of motion of man = (v - 20)

Buses plying in this direction go past the cyclist after every 18 min.

Therefore, separation between the buses = (v - 20)×(18/60)

For buses coming from B to A:

The relative velocity of bus with respect to man = (v + 20)

Buses coming from town B past the cyclist after every 6 min,

∴ (v + 20)×(6/60) = vT

v = 40 km/h and T = 2/30 h

T = 15