4- Please Help ! Im trying to understand this process

1 Companies A, B, and C produce 30%, 20%, and 50%, respectively, of the major appliances sold in a certain area. In that area, 5% of the company A appliances, 15% of the company B appliances, and 5% of the company 0 appliances need service within the rst year. Suppose a defective appliance is chosen at random; nd the probability that it was manufactured by Company B. The probability that it came from company B is . (Type an integer or decimal rounded to four decimal places as needed)