One-sixth of the girls and two-sevenths of the boys in a school marching band are in the percussion section. the percussion section has 6 girls and 10 boys. how many students are in the marching band?

Which of the following are independent events? a) knowing that it is going to rain tomorrow, and bringing an umbrella to schoolb) knowing that you have to get up early tomorrow, and going to bed before 9 p.mc) knowing that it is going to rain tomorrow, and going to bed before 9 p.md) knowing that you have a test in school tomorrow, and studying thw night before