(Choose 1 answer)
A person uses his car 50% of the time, walks 20% of the time and rides the bus 30% of the time as he goes to work. He is late 10% of the time when he walks; he is late 3% of the time when he drives; and he is late 7% of the time he takes the bus. What is the probability he walked if he is on time?
A. 0.375
B. 0.191
C. 0.296
D. 0.625
Exit 48
