Answer: $8000r
Explanation:
Assuming that both savings accounts earn the same interest rate over the five-year period, Giovanna would have earned the same amount of interest on both accounts.
If she deposited half of the money, which is $1600/2 = $<<1600/2=800>>800, into each account, then the total amount of money she deposited into savings is $800 + $800 = $1600.
Let's say the interest rate on both accounts is r, expressed as a decimal. The amount of interest Giovanna earns on the Oak account after five years would be:
Interest on Oak account = $800 * r * 5
Similarly, the amount of interest she earns on the West United account after five years would be:
Interest on West United account = $800 * r * 5
The total amount of interest she earns from both accounts would be the sum of these two amounts:
Total interest = Interest on Oak account + Interest on West United account
= ($800 * r * 5) + ($800 * r * 5)
= $1600 * r * 5
= $8000r
So, the total amount of interest Giovanna will have earned from both accounts at the end of five years is $8000r. The actual value of r would depend on the interest rate offered by each savings account.