The number of years in which the money is in the account is 6 years.
<h3>What is simple interest?</h3>
Simple interest denotes the amount of payment that is received or paid by a person in return for anything pledged or given a loan.
The interest computed on the principal amount for a specified duration of time and rate of interest is called simple interest.
The formula of simple interest:
![\text{SI}= \text{P}\times r \times t](https://tex.z-dn.net/?f=%5Ctext%7BSI%7D%3D%20%5Ctext%7BP%7D%5Ctimes%20r%20%5Ctimes%20t)
Where, (P) stands for principal, (r) for interest rate, and (t) is for the time period.
<u>Computation </u><u>of a number of years:</u>
According to the given information,
P=$500,
r=7.5%,
t=?
SI= $225
Now, substitute the given values in the above formula, we have:
![\text{SI}= \text{P}\times r \times t\\\\\$225=\$500\times\ 7.5\%\times t\\\\t= 6 \text{Years}](https://tex.z-dn.net/?f=%5Ctext%7BSI%7D%3D%20%5Ctext%7BP%7D%5Ctimes%20r%20%5Ctimes%20t%5C%5C%5C%5C%5C%24225%3D%5C%24500%5Ctimes%5C%207.5%5C%25%5Ctimes%20t%5C%5C%5C%5Ct%3D%206%20%5Ctext%7BYears%7D)
Therefore, the number of years is 6 years.
To learn more about the simple interest, refer to:
brainly.com/question/2793278