The correct answer would be B. 3.5 (c+a). Hope that helps! :)
10^5=100,000
100,000*3.6
360,000
360,000/2400
I believe it’s 150 bolts per minute
10 students (brass)=40% of band
4 students (strings)=16% of band
? students (other)=44% rest of band
14/56%=?/44%
(cross multiply to find ?){don't forget to turn percents into decimals}
?=11
There are 25 students in total in the band.