6th Grade Solving Itinerary Problems Using Comparison: Problem 1

Problem: Two 6th grade classes A and B are going on a field trip, but the school only has one bus enough to hold one class. If the walking speed of both classes is 3 kilometers per hour, and the speed of the bus is 50 kilometers per hour, and the goal is to deliver BOTH classes to the destination by the least possible amount of time possible, what is the ratio between the amount of distance that class A will have to walk to the distance class B will have to walk? What fraction of the entire trip will class A walk?

Key: 1) Create the sketch; 2) Use speed ratios