# Math Help - precentage

1. ## precentage

360 students: freshman,sophomores,juniors and seniors,attended a basketball game at a college.50% of these were freshman and 30% of the students were sophomores.the number of junior was one half the number of sophomores.what percent of students were senior?

choice: a) 20% b)5% c)10% d) 18%

2. Originally Posted by BeBeMala
360 students: freshman,sophomores,juniors and seniors,attended a basketball game at a college.50% of these were freshman and 30% of the students were sophomores.the number of junior was one half the number of sophomores.what percent of students were senior?

choice: a) 20% b)5% c)10% d) 18%
using the above data

freshman =.50(360)=180
sophomores = .30(360)=108
junior=.5(108)=54

senior=360-54-108-180=18

$\frac{18}{360}=\frac{1}{20}=.05=5\%$