Question

Liam opened a savings account with a $400 deposit and a simple interest rate of 7.5%. If the balance of the account is now $670 and there are no deposits or withdraws, how long ago did he open the account?

Answer 1

If he deposited weekly, he would be depositing 9 dollars each week.

Explanation:

Just thank me later and click the crown at the top of this answer if it helped ;)