Given:
- P= $12500
- R= 10%
- T= 3 years
Note that:
- P= Principal amount
- R= Rate of interest
- T= Time period
Solution:
![\huge\boxed {\: I=(PRT)/(100)}](https://img.qammunity.org/2023/formulas/mathematics/high-school/gwh6vz95zybbdhuh5knbsl01efubhwgrt6.png)
First, we'll have to multiply the principal amount, rate of interest and time period.
![12500 * 10 * 3](https://img.qammunity.org/2023/formulas/mathematics/high-school/ogtu4fk20wz6jhmidmyh88go0yhggbw5c4.png)
![= 375000](https://img.qammunity.org/2023/formulas/mathematics/high-school/5v7lu028hhtabojj6q3007t0a514psj6lq.png)
Now, divide the amount ( 375000 ) by 100.
![= (375000)/(100)](https://img.qammunity.org/2023/formulas/mathematics/high-school/xqt98zz2la1r5ws77e05qhddof06onpszp.png)
= $3750
Hence, the simple interest is $3750