Answer:
1) Simple interest is 72 dinars
2) Total amount after 3 years is 672 dinars.
Explanation:
Principal Amount P = 600 dinars
Interest Rate= 4% = 0.04
Time = 3 years
i) Simple Interest
The formula used to calculate interest is
![I=P* r * t](https://img.qammunity.org/2021/formulas/mathematics/high-school/xe96q7grezyvmrl880c5umyy9301rn12zx.png)
Putting values and finding interest
![I=P* r * t\\I=600* 0.04 * 3\\I=72](https://img.qammunity.org/2021/formulas/mathematics/high-school/qw9d2k81ceg35r357gzv5ztag4pgu780n5.png)
So, simple interest is 72 dinars
ii) Total amount after 3 years
The formula to calculate total amount is:
![A=P(1+rt)](https://img.qammunity.org/2021/formulas/mathematics/high-school/kik31jzb7whgmf26d88167hybqyfgduu2j.png)
Putting values and finding future amount A
![A=P(1+rt)\\A=600(1+(0.04*3))\\A=600(1+0.12)\\A=600(1.12)\\A=672](https://img.qammunity.org/2021/formulas/mathematics/high-school/5apotkw2jeq270lsmyaoi3trczmj59j679.png)
So, Total amount after 3 years is 672 dinars.