Mario and his family are discussing how to pay for his college
education. The cost of tuition at the college that Mario wants to attend is
$7,500 per year. Mario's parents will pay 60% of the tuition cost every
year, and Mario will pay the rest. Mario has two years to save enough
money to attend his first two years of college. What is the minimum
amount of money he should save every month in order to reach his goal?