Cars arrive to the drive-thru of a local Chick-Fil-a every 239 seconds on average with a standard deviation of 285 seconds. The time it takes the restaurant to take the car's order, process payment, and fill the order is 151 seconds on average with a standard deviation of 185 seconds. To simplify the analysis, treat the restaurant as a single server that works on one drive-thru order at a time on a first-come-first-serve basis. Calculate the average time in seconds a car spends waiting to begin placing its order. Carry intermediate calculations to at least 3 decimal places. Enter your final answer rounded to one decimal place