Answer:

the speed of Boy A is 40 m/min, and the speed of Boy B is 20 m/min.

Explanation:

speed = distance / time

where "distance" is the distance walked by the boy, and "time" is the time taken to walk that distance.

For Boy A, the speed is:

speed of Boy A = 200 m / 5 min = 40 m/min

For Boy B, the speed is:

speed of Boy B = 200 m / 10 min = 20 m/min

Therefore, the speed of Boy A is 40 m/min, and the speed of Boy B is 20 m/min.