Question

Given the frequency table what percentage of the students in grade 11-12 like rock music round to the nearest whole percent

Rap rock country row total
Grades 9-10. 40. 30. 55. 125
Grades 11-12. 60. 25. 35. 120
Column totals. 100. 55. 90. 245

A 10%
B. 21%
C. 25%
D 45%

Answer 1

9514 1404 393

Answer:

B. 21%

Explanation:

The number of students in grade 11-12 is given in the total column: 120.

The number of those who like rock music is given in the second column: 25.

Then the percentage in 11-12 grade who like rock music is ...

25/120 × 100% ≈ 20.833% ≈ 21%