Set Up an Equation and Solve the Following Problem

Multiple Choice

Set up an equation and solve the following problem. Suppose that Karen, riding her bicycle at 14 miles per hour, rode 10 miles farther than Michelle, who was riding her bicycle at 12 miles per hour. Karen rode for 30 minutes longer than Michelle. How long (in hours) did Michelle ride her bicycle?

A) 1.85 hours
B) 1.7 hours
C) 1.5 hours
D) 1.55 hours