Answer:
87
Step-by-step explanation:
Range= biggest value-smallest value
R=100-13
R=87
5 girls, 5 boys...total of 10 students
P(1st pick is a girl) = 5/10 which reduces to 1/2
P(2nd pick is a boy) = 5/9
P (both) = 1/2 * 5/9 = 5/18 <=
X=percentage in decimal
30x=6
30/30x=6/30
x=1/5=.20
.20=20/100=20%
20%
So to to get 3% of 159 you: 159x0.03=4.77
