Solution:
Given:- Distance from A to B (one direction) is 300 m.- Number of round trips in 20 minutes is 6.The total distance covered for 6 round trips (back and forth) is:\[ 6 \text{ round trips} \times 2 \times 300 \text{ m/round trip} = 3600 \text{ m} \]Time taken for 6 round trips is 20 minutes, converting minutes to seconds:\[ 20 \text{ minutes} \times 60 \text{ seconds/minute} = 1200 \text{ seconds} \]The average speed, $$ V $$, is total distance divided by total time:\[ V = \frac{\text{Total Distance}}{\text{Total Time}} = \frac{3600 \text{ m}}{1200 \text{ s}} = 3 \text{ m/s} \]