Grades 9-10 Video Solutions 2022-2022_9-10

Video Transcription

Video Summary

The problem involves finding the ratio of AD to DC in a large rectangle, divided into 12 identical smaller rectangles. By defining the smaller rectangle's sides as A and B, the problem sets up equations based on equivalent sides and solves for the relationship between A and B, finding B to be 1.5A. The sides AD and DC are then expressed as combinations of A and B, with AD equaling 2B + A and DC equaling 3B. Substitution and simplification lead to the ratio of 8:9, providing the final answer.