Answer:
The exact interest on $5,870 at 12% is $410.9
Explanation:
From the information provided we know that
Principal amount: $5,870
Interest rate: 12% -> 0.12
Time: 7 months (From June to December)
When you know the principal amount, the rate, and the time, the amount of interest can be calculated by using the formula:
![I=P\cdot r\cdot t](https://img.qammunity.org/2020/formulas/mathematics/college/n393xokdhul9upe6fkkkabvmbohp1voi3m.png)
where P is principal, r is the rate of interest and t is the time in years.
We need to convert the 7 months into 1 year.
![7 \>months \cdot (1 year)/(12 months) = (7)/(12) year](https://img.qammunity.org/2020/formulas/mathematics/college/zlhzd0fz8d3qknudo79j4hqn87gk1072ef.png)
Now we can use the above formula
![I=P\cdot r\cdot t=5870\cdot 0.12 \cdot (7)/(12) \\I = 0.12\cdot (7\cdot \:5870)/(12)\\I = 0.12\cdot (20545)/(6)\\I = (2465.4)/(6)\\I = 410.9](https://img.qammunity.org/2020/formulas/mathematics/college/1mayoe73ereuggsau9ohy86pb9klodehr3.png)
Therefore the exact interest on $5,870 at 12% is $410.9