Ask Question
18 September, 10:42

There are 70 students in the school band. 40% of them are sixth graders, 20% are seventh graders, and the rest are eighth graders.

How many sixth graders, how many seventh graders and how many eighth graders?

+3
Answers (1)
  1. 18 September, 13:56
    0
    Sixth graders: 14

    Seventh graders: 28

    Eighth graders: 28

    Step-by-step explanation:

    To solve this you just have to use a rule of three to solve the percentages, remember that the 100% will be the 70 students, and we solve each case separetly:

    70 students = 100%

    sixth grades = 40%

    Sixth grades = (40*70) / 100

    Sixth graders = 28

    70 students = 100%

    seventh grades = 20%

    seventh graders = (20*70) / 100

    Seventh graders=14

    So if we have that the rest of the students are eighth graders, we just add up the sixth and seventh graders and withdraw them from the total:

    28+14=42

    70-42=28

    SOwe have that the eighth graders are 28
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “There are 70 students in the school band. 40% of them are sixth graders, 20% are seventh graders, and the rest are eighth graders. How many ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers