How maney new classes must be formed?
2006-12-19 00:12:28 · 6 answers · asked by Quinones 1 in Education & Reference ➔ Teaching
(18)(35) = 30x
630 = 30x
x = 21
21-18 = 3 new classes
2006-12-19 00:23:12 · answer #1 · answered by Anonymous · 0⤊ 0⤋
To reduce the class size to 30, you would have to take 5 from each class, that's 18X5=90, then divide 90 by 3. So you will need 3 new classes.
2006-12-19 00:19:22 · answer #2 · answered by fangtaiyang 7 · 0⤊ 0⤋
18 classes have 5 too many student in each.
So, 18*5 = 90
You have ninety students that need a classroom.
Each classroom has room for 30 students.
So, 90/30 = 3
3 more classes must be formed
2006-12-19 02:39:38 · answer #3 · answered by Anonymous · 0⤊ 0⤋
21 class
2006-12-19 00:16:37 · answer #4 · answered by Anonymous · 0⤊ 0⤋
3 new classes
bcos 5 students are excess in each class then total we have 18X5=90 students
and if we place 30 students in a class then it is 3 new classes
2006-12-19 00:16:17 · answer #5 · answered by gokul 2 · 0⤊ 0⤋
3 new classes. [you need a total of 21 and you already have 18]
2006-12-19 00:22:09 · answer #6 · answered by Wynne 1 · 0⤊ 0⤋