Denise will be 25 years old in two years. Her sister, Diane, is 4 years younger. In how many years will Diane be 25 years old? Give me reasons, before answering the question
Denise is 25 - 2 = 23 years old now. So, Diane is 23 - 4 = 19 years old now. Diane will be 25 years old in 25 - 19 = 6 years. So the final answer is 6.