MATH 121 Lecture Notes - Lecture 7: Decimal Mark
Document Summary
Many everyday decisions and events involve applications of percent and our understanding of percent. Consumer mathematics uses percent, fraction, and decimal numbers. This section will discuss converting between these types of numbers and cover some basic applications of percent. Suppose you took your first math exam and answered 15 out of. It is difficult to compare these exams because they have a different number of questions. However, if we can think of each of these exams as a ratio of correct answers, we can then convert the ratios into a percent. Then, we will be able to compare the test scores. Suppose you took your first math exam and answered 15 out of 20 questions correctly. On your second math exam, you answered 19 out of 25 questions correctly. On which test did you have a higher score: we can find the percent that you received on each test by:
