Abag contains blue and pink balls. there are 8 more blue balls than pink balls. identify the expression that represents the probability that a person will pick a blue ball first and then a pink ball without replacement. then find the probability of someone picking a blue ball and then a pink ball if the bag originally contains 5 pink balls. round to the nearest hundredth.

Let 
b---> the original amount of blue balls in the bag
p---> the original amount of pink balls in the bag

we know that
b=8+p
p=5
so
b=8+5> b=13

step 1
Find the total of balls originally in the bag
total =13+5> 18

step 2
find the probability that a person will pick a blue ball first
Find P(b)
P (b)=13/18

step 3
Find the probability that a person will pick a pink ball second without replacement
the total of balls now is (18-1)> 17
P(p)=5/17

step 4
Find the probability that a person will pick a blue ball first and then a pink ball without replacement 
(13/18)*(5/17)> (13*5)/(18*17)> 65/306> 0.21

the answer is
0.21