GET READY FOR THE AMC 10 WITH AoPS
Learn with outstanding instructors and top-scoring students from around the world in our
AMC 10 Problem Series online course.
2011 AMC 10A Problems
Problem 1
A cell phone plan costs
20 each month, plus 5¢ per text message sent, plus 10¢ for each minute used over
30 hours. In January Michelle sent 100 text messages and talked for 30.5 hours. How much did she have to pay?