Tanya has several different ways she likes to walk home. One route takes 20 minutes, two of the routes take 30 minutes, and two take 40 minutes.
Tanya randomly chooses a route to walk home.
What is the probability, to the nearest percent, that it will take her 30 min to walk home?
a. 20%
b. 33%
c. 40%
d. 67%