Answer:
the answer is 44 students.
Step-by-step explanation:
Given
12 black socks
16 white socks
Without looking, Mario takes one sock out of the drawer and then takes out another without replacing the first sock
Which expression shows one way to find the probability that he will take out two white socks?
Procedure
for the first white socks

for the second white socks
We need to set up a proportion.
5/6.85 = 1/x The proportion is set up here.
x is the price per pound of apples. We need to solve for x.
Cross multiply.
5*x = 6.85*1
5x = 6.85 Now we must solve for x by isolating the variable.
5x/5 = 6.85/5 Divide both sides by 5.
x = 6.85/5
x= 1.37
Now, since x equals 1.37, we know that our unit price per pound is $1.37.
Final answer: $1.37 per pound of apples