Kelsie works at a bicycle shop as a salesperson. She records the number of bicycles she sells on a daily basis. Here is the probability distribution of B= the number of bicycles Kelsie sells on a randomly selected day, and T= the time she spends filling out daily sales reports.

B= mu /π of bicycles sold 0 1 2 3
T= time (minutes) 10 20 30 40
Probability 0.30 0.50 0.15 0.05

Calculate the mean of B.