Question: John is twice as old as Mary and half as old as Tonya. If Tanya is 60, what is their average age? Think carefully first, then make a decision:
John is 30 because 60 / 2 = 30. Mary is fifteen because 30 / 2 = 15. Their total age is 105 because 60 + 30 + 15 = 105. Their average age is 35 because 105 / 3 = 35. So the answer is 35.