Chee Voon Loong's answer to Rin's Primary 6 Maths Data Analysis Singapore question.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Take x as total number of girls
Take y as total number of stickers
Case 1: average number of sticker is 92 if the total number of stickers is 10 pieces more. Hence the equation will be
92 = (y + 10)/x
Case 2: average number of stickers is 89 is the total number of stickers is 8 pierces less. Hence the equation will be
89 = (y-8)/x
Solve these two equations you will get x = 6, which means that there are 6 girls in total.
Take y as total number of stickers
Case 1: average number of sticker is 92 if the total number of stickers is 10 pieces more. Hence the equation will be
92 = (y + 10)/x
Case 2: average number of stickers is 89 is the total number of stickers is 8 pierces less. Hence the equation will be
89 = (y-8)/x
Solve these two equations you will get x = 6, which means that there are 6 girls in total.
Date Posted:
3 years ago
Thanks!
360 Tutoring Program