R = v/4
because:
v = 4r
v/4 = 4r/4 the fours cancel out and you are left with r
therefore v/4 = r or r = v/4
9 students
30% ends up being .3%, multiply .3% by 30 students which equals 9.
Answer:
n=9
Step-by-step explanation:
because 3 times 9 =27 plus 17 =44