Question

faith recorded the grade level and instrument of everyone in the middle school school of rock below. school of rock guitar bass drums keyboard 6th grade 17 12 10 18 7th grade 15 14 14 12 8th grade 20 11 18 16 what percent of the 6th graders in the school of rock play keyboard? round your answer to the nearest whole number percent.

Explanation:

Step1: Calculate total number of 6th graders

Add the number of 6th graders for each instrument: \(17 + 12+10 + 18\).

$$17+12 + 10+18=(17 + 12)+(10 + 18)=29+28 = 57$$

Step2: Calculate the percentage of 6th - graders who play keyboard

The number of 6th - graders who play keyboard is \(18\). Use the formula \(\text{Percentage}=\frac{\text{Part}}{\text{Whole}}\times100\).
\(\text{Percentage}=\frac{18}{57}\times100\)

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Answer:

\(32\%\)