Given:
Principal, P = $27,000
Interest rate, R = 1.9%
Time, T = 4
Let's solve for the following.
(a) What is the interest she must pay?
To find the interest apply the simple interest formula:
![I=(P\ast R\ast T)/(100)](https://img.qammunity.org/2023/formulas/mathematics/college/om2hur9cxfqajcbc0kf81ilbgsmfbec5u4.png)
Substitute values into the formula:
![\begin{gathered} I=(27000\ast1.9\ast4)/(100) \\ \\ I=(205200)/(100) \\ \\ I=2052 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/pxm1iye3n746h8kcb9y21fi303kb1a9cov.png)
Therefore, the interest she must pay is $2,052
(b) What is the total she must pay back?
To find the total she must pay, add the interest and the principal amount.
Total Amount = Principal + Interest
Total Amount = 27000 + 2052 = 29,052
Therefore, the total amount she must pay is $29,052
ANSWER:
(a) $2,052
(b) $29,052