Chad plans to attend a private college with tuition and fees of about $30,000 per year. Room and board will cost $9,000 per year, and textbooks will cost another $800 each year. How much should Chad plan to spend on 4 years of education at this college?

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.