Answer:
Interest earned after 12 years is $48,000.
Step-by-step explanation:
The first step is to find 4% of 10,000
10,000 times .4 equals to 4,000
4% of 10,000 is 4,000
So each year, $4,000 is added
Times $4,000 by 12 years and you will have the total interest earned.
In case you need to know, the total amount of the bank account should be $58,000.
I hope this helps! :)