there were 24 student from class seventh and 20 students from class 8 in a chess club last year. this year the number of class 7 students increased by 25% but the number of class 8 students decreased by 10% .was there any decrease or increase in the overall membership. find the overall percentage change in membership of the club??
Answers
Last year there were 24 CLASS 7 STUDENTS in chess club. This year the number increased by 25%:
24×0.25=6 more STUDENTS this year
24+6=30 total STUDENTS this year
Last year there were 20 CLASS 8 STUDENTS in chess club. This year the number decreased by 10%:
20×0.1=2 fewer students this year
20–2=18 total students this year
Combining the number of girls and boys this year:
30+18=48 total members this year
Combining the number of girls and boys last year:
24+20=44 total members last year
Finding the difference in the number of members this year and last year:
48–44=4 more members this year
To find the percent change, divide the change in the number of members by the number of members last year:
4Ã⋅44=0.09¯¯¯¯¯ repeating
Change the decimal amount into a percent amount and round to the nearest whole percent:
0.09¯¯¯¯¯Ã—100≈9% change in the chess club membership
Since there are 4 more members in the club this year when compared to last year, the change is a 9% increase
PLEASE MARK AS BRAINLIEST