Please answer it correctly

Your company's statistician has told you that a certain piece of equipment can be expected to last 5, 6, or 7 years. It is 3.6 times more likely that the equipment will last 6 years compared to 5 years, but it is only 1/8 as likely that the equipment will last 7 years as compared to 5 years. Determine the probabilty that the equipment will last 6 years. Express your answer in % to the nearest 0.1%