Grades 5-6 Video Solutions 2015-Level 5&6 Video Solutions 2015 problem26

Level 5&6 Video Solutions 2015 problem26

Video Transcription

Video Summary

The problem involves determining the number Mary obtained for vertex F on a cube, given specific face values for other vertices. Mary adds the numbers on the cube's faces at each vertex. Using the equations derived from known vertex values and their shared faces, it was found that the difference in sums of shared and unshared face values equals 2. Setting up the equation 24 - X = 2, where X is the unknown value for vertex F, leads to the solution X = 22. Thus, the number Mary obtained for vertex F is 22.

Keywords

cube

vertex values

face values

equation

solution