Answer:

Step-by-step explanation:
<u><em>The question in English is</em></u>
Heni placed in a bank the amount of Rp. 3,000,000.00. After five months, she had a total of Rp. 3,258,750.00.
How much money will Heni have after 2.5 years?
step 1
Find the rate of interest
we know that
The simple interest formula is equal to

where
A is the Final Investment Value
P is the Principal amount of money to be invested
r is the rate of interest
t is Number of Time Periods
in this problem we have

substitute in the formula above

![r=[(3,258,750/3,000,000)-1]\(5/12)](https://tex.z-dn.net/?f=r%3D%5B%283%2C258%2C750%2F3%2C000%2C000%29-1%5D%5C%285%2F12%29)

step 2
For t=2.5 years

