Vanessa deposited money into a bank account that earned 1.25% simple interest each year. After 1/2 year, she had earned $5.00 in interest on the account. If no other money was deposited into or withdrawn from the account, how much was her initial deposit

In order to figure this out we first have to divide the interest by 2 since it was only half a year.

0.0125 : 2 = 0.00625

We now divide the interest number 5 by 0.00625 to find the initial amount.

5 : 0.00625 = 800

To check this answer, multiply 800 by 0.00625.

800 * 0.00625 = 5