No, it's not right.
Use a proportion.
3/5 = x/30
5x = 90
x = 18 eighth graders
The ratio of 7th to 8th graders in a play is 2:3. There are 30 students in the play. How many are 8th graders?
How do you work this problem is like this
2/3 x30/1=60/2=20 is this right
2 answers
Always look at your previous posts before reposting, so it
doesn't lead to unnecessary work on the part of tutors.
https://www.jiskha.com/questions/1784954/The-ratio-of-7th-to-8th-graders-in-a-play-is-2-3-There-are-30-students-in-the-play
doesn't lead to unnecessary work on the part of tutors.
https://www.jiskha.com/questions/1784954/The-ratio-of-7th-to-8th-graders-in-a-play-is-2-3-There-are-30-students-in-the-play
3 answers