One 8-oz serving each of coffee, energy drink, and soda contains mg of caffeine. One serving of coffee has mg more caffeine than two servings of soda. One serving of energy drink contains mg less caffeine than one serving each of coffee and soda. Find the amount of caffeine in one serving of each beverage. The amount of caffeine in one serving of coffee is mg, in one serving of energy drink ismg, and in one serving of soda is mg. (Type whole numbers.)