This chapter begins with a journey through ratios and rates and includes the all-important technique of converting units using dimensional analysis. You will then rocket into solving proportions and setting up proportions to solve word problems involving scale factors and similar figures. From here it will be time to master how to find the part, whole, and percent in various percentage problems. These concepts are taught both by setting up & solving equations or proportions – both are excellent solution methods. The chapter concludes with the study of calculating simple interest and percent of change, markups, and discounts. Now that you have read the description, let’s get rolling!