Answer:
Time taken by the shark to swim 42 meters = 3.5 seconds
Step-by-step explanation:
Given:
Average velocity at which shark travels = 12 m/s
Distance the shark travels = 42 m
To find time taken by shark to swim 42 meters at the given velocity.
Solution:
The time can be calculated as:

Plugging in the given values, we have:

Simplifying fractions.

∴
(Answer)