A credit card company charges 1.5% each month on the outstanding balance of a loan.
问题描述：
A credit card company charges 1.5% each month on the outstanding balance of a loan.
Peter borrows $3000 on January and repays $300 on the first day of each month
On which date does he pay off the debt?
Thanks!
答
每个月扣掉300后加上1.5%,如此继续,知道金额小于0