Question Statement :

In a bolt-making factory, machines A, B and C manufacture 25%, 35% and 40% respectively, of the total bolts. Of their outputs, 5%, 4%, and 2%, respectively, are defective bolts. A bolt is drawn at random and found to be defective. What is the probability that it is manufactured by machine B?

Type in your answer as a decimal number rounded off to two decimal places. For example, if your answer is 22.156, type in 22.16