A man can swim at a speed of 7.0 meters per second. But there’s a current going against him at 3.7 meters per second. So, his net speed (effective speed) against the current is 7.0 - 3.7 = 3.3 meters per second.
He swims for 10 minutes, which is the same as 600 seconds.
To find out how far he swims along the bank, we multiply his effective speed by the time he swims:
Distance = Effective Speed × Time
Distance = 3.3 m/s × 600 s = 1980 meters
So, the man will swim a distance of 1980 meters along the bank in 10 minutes.
The correct answer is:
B. 1980 m