Answer:
18 jumps would be expected in a 2 hour period.
Step-by-step explanation:
Given : A dolphin jumps 54 times in a 6 hour period.
To find : At this rate, how many jumps would be expected in a 2 hour period?
Solution :
Applying unitary method,
In 6 hour period Dolphin jumps 54 times.
In 1 hour period Dolphin jumps [tex]\frac{54}{6}[/tex] times.
In 1 hour period Dolphin jumps 9 times.
In 2 hour period Dolphin jumps [tex]2\times 9[/tex] times.
In 2 hour period Dolphin jumps 18 times.
Therefore, 18 jumps would be expected in a 2 hour period.
