Laura takes very good care of her vehicles. She owns a blue van and a red truck. Although she bought them both new, she has owned the truck for years longer than she has owned the van. If the sum of the ages of the vehicles is years, how old is the van and how old is the truck? Ryan is thinking of a number. When he multiplies this number by and then subtracts from the answer, he ends up with his original number. What number is Ryan thinking of?