Grades 7-8 Video Solutions 2021-video 2021 7-8/12

Video Transcription

Video Summary

The problem involves determining the weight of an empty jar based on given data: a jar one-fifth filled with water weighs 560 grams, and the same jar four-fifths filled weighs 740 grams. By establishing equations and solving them, it is determined that three-fifths of the water weighs 180 grams, indicating one-fifth is 60 grams. Substituting this information back into the equation for the jar one-fifth filled with water reveals the empty jar weighs 500 grams. Thus, the weight of the empty jar is 500 grams.

Keywords

empty jar weight

water weight calculation

equation solving

jar measurement

mathematical problem