A student athlete runs 3 miles in 30 minutes. A professional runner can run 1 times as far in 30 minutes. How far can the professional runner run in 30 minutes?
First, I advise you to turn your mixed numbers into improper fractions because it is easier to multiply. That gives you 10/3 * 5/4 = 25/6 or, as a mixed number, 4 and 1/6.