Grades 7-8 Video Solutions 2021-video 2021 7-8/21

Video Transcription

Video Summary

To solve the problem of doubling a fraction, the transcript used a hypothetical example where both the numerator and denominator are initially 100. Increasing the numerator by 40% gives 140. To double the fraction from 1 to 2 with the new numerator of 140, the denominator needs to be decreased to 70. The calculation shows that this requires a decrease of 30% from the original denominator of 100. Therefore, the denominator should be decreased by 30% to achieve the desired outcome.

Keywords

fraction doubling

numerator increase

denominator decrease

percentage calculation

mathematical problem