Grades 11-12 Video Solutions 2022-2022_11-12

Video Transcription

Video Summary

The problem involves determining which time distribution for app usage this week is impossible based on last week's usage. Last week, Henry used apps for 3, 2, 2, and 1 hours respectively. This week, he maintained the same time on two apps but halved the time on the other two. The potential combinations are: 3, 2, 1, 0.5; 3, 1, 1, 1; 1.5, 2, 2, 0.5; and 1.5, 2, 1, 1. The impossible combination is one that repeats an app time thrice (e.g., 3, 2, 2, 0.5), which is option E.

Keywords

app usage

time distribution

impossible combination

Henry

time halving