This document describes a lesson on solving ratio problems by finding equivalent ratios. It includes examples of ratio problems with quantities that change from a "before" ratio to an "after" ratio. It instructs students to draw tape diagrams to represent the "before" and "after" ratios to solve such problems. Sample ratio problems involve topics like hotel room occupancy, exercise routines, money amounts, orders of sporting goods, class enrollments and more. The document provides exercises and a problem set for students to practice these skills.