Grades 7-8 Video Solutions 2022-2022_7-8

Video Transcription

Video Summary

The problem involves determining which distance cannot be the distance from A to D among multiple configurations of villages A, B, C, and D on a straight road, given distance constraints between them. By considering all possible configurations of distances from B to C (20 km) and B to D (45 km), while keeping A to C fixed at 75 km, each potential distance from A to D is calculated. After evaluating all possibilities, it is found that 80 kilometers is the only distance that cannot be achieved between A and D. Therefore, 80 kilometers is the incorrect option.

Keywords

villages

distance constraints

configurations

straight road

incorrect distance