Question 3

Explanation

Given:

• Initial capital ($M_0$) = $\text{Rp}12,500,000.00$
• Final capital ($M_t$) = $\text{Rp}15,000,000.00$
• Saving period ($t$) = $1$ year

First, we calculate the interest amount earned:

The interest percentage is the ratio of the interest amount to the initial capital multiplied by the saving period:

Thus, the money grew due to an interest of $20\%$.