Question: In 10 years, Cornelia will be three times as old as Kilee. If Kilee is currently 20 years old, how old is Cornelia now? Think carefully first, then make a decision:
In 10 years, Kilee will be 20 years + 10 years = 30 years. In ten years, Cornelia will be 3 * 30 years = 90 years old. Cornelia is currently 90 years - 10 years = 80 years old. So the answer is 80.