At a certain college, 15 of students speak Spanish, 8 speak ...

[formula1]

At a certain college, 15 of students speak Spanish, 8 speak Italian, and 5 speak both languages. A student is chosen at random from the college. What is the probability that the student speaks Spanish given that he or she speaks Italian?
 
  A) 0.625 B) 0.333 C) 0.030 D) 0.180

Question 2

High temperatures in a certain city for the month of August follow a uniform distribution over the interval 61F to 91F. Find the high temperature which 90 of the August days exceed.
 
  A) 64F B) 88F C) 71F D) 91F

[dellikani2015]

Answer to Question 1

A

Answer to Question 2

A

[formula1]

Thank you!

[dellikani2015]

Always glad to help...