In a maths class of 26 students each girl drew a triangle and each boy drew a rectangle. If there were 92 sides how many girls were there?
回答 (4)
2016-09-17 3:52 pm
Let the number of girls in class be x
the number of boys in class be (26 - x)
3x + 4(26 - x) = 92
3x + 104 - 4x = 92
x = 12
Therefore, there are 12 girls in the class
the number of boys in class be (26 - x)
3x + 4(26 - x) = 92
3x + 104 - 4x = 92
x = 12
Therefore, there are 12 girls in the class
2016-09-17 12:58 pm
b + g = 26
4b + 3g = 92
14 boys and 12 girls
4b + 3g = 92
14 boys and 12 girls
2016-09-17 12:48 pm
3g + 4(26 - g) = 92
g = 104 - 92 = 12
g = 104 - 92 = 12
2016-09-17 12:46 pm
14 Boys = 56 Sides
12 Girls = 36 Sides
56+32=94
12 Girls = 36 Sides
56+32=94
收錄日期: 2021-05-03 03:23:59
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160917043638AAzS9MY