Question

Swimming pool is of length 50 m a and b entered it 300 m race starting from one end of the pole at the same time

Answer 1

Answer:

Step-by-step explanation:

ecause since A is a faster swimmer being winner of race, he swims entire 50 m in the first leg and returns to meet B somewhere in the middle of pool. So, everytime they meet, they jointly cover 100 m.

Since we know they meet 17 times, it means they jointly cover 17 x 100 = 1700 m. Since A is the winner, he covers 1000 m and rest 700 m covered by B.

Now Speed is directly proportional to distance covered.

=> 5:s = 1000:700

=> s = 5 x 700/1000 = 3.5 m/s!  

Note : There is a hidden assumption here to the effect that both A & B meet for the 17th time at the starting point where the race ends.