SOLUTION: Ninety percent of the ninth grade students at Highland High school take algebra. If 180 ninth grade students take algebra, how many ninth grade students do not take algebra ?

SOLUTION: Ninety percent of the ninth grade students at Highland High school take algebra. If 180 ninth grade students take algebra, how many ninth grade students do not take algebra ?

Algebra.Com

Question 1037278: Ninety percent of the ninth grade students at Highland High school take algebra. If 180 ninth grade students take algebra, how many ninth grade students do not take algebra ?
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
Hi there,
90% = 180
1% = 180/90
100% = 180/90 x 100
100% = 200.
Total in Ninth Grade = 200
Those taking Algebra = 180
Those not taking Algebra = 20
Hope this helps :-)
RELATED QUESTIONS
Ninety percent of the ninth grade students at Richbartville High School take algebra. If... (answered by josmiceli)

The number of boys in ninth grade is 12 less than twice the number of girls. There are 51 (answered by stanbon)

One quarter of the students at a high school take algebra. one fifth of the students take (answered by solver91311)

A sample of students was selected at random from all ninth-grade students in a large... (answered by math_tutor2020)

Two out of 3 students in Mr.Pearson's ninth grade class recycle aluminum cans. If 48... (answered by kusha)

how do I solve probability of compound events like this: P(male or ninth grader) (answered by stanbon)

At a certain school, 240 of the students take math, 180 of the students take grammar, and (answered by AnlytcPhil,phojhe001)

The students at King High School are in grades 9, 10, 11, and 12. Of all of the students, (answered by stanbon)

In the 7th grade at the middle school only 1/4 of the students have a study hall. of... (answered by solver91311)