Answer:
time = 2.5 years.
Explanation:
Given : Interest =$450
Principal =$2400
Rate =7.5%
We have to calculate the time.
Since,

we have ,
Interest =$450
Principal =$2400
Rate =7.5%
Substitute, we get,

Solve for time,
Multiply both side by 100, we have,

Now divide by 2400 × 7.5 , we have,

Simplify, we have,
time = 2.5 years.