Lizzy: Rachel is 12 years old, and her grandfather is 7 times her age. Her mother is half grandfather's age, and her father is 5 years older than her mother. How old will Rachel's father be when she is 25 years old?.
Me: Hmmm, let me think. I think this is the detailed solution:
Rachel's grandfather is 12 x 7 = 84 years old. Her mother is 84 / 2 = 42 years old. Her father is 42 + 5 = 47 years old. Rachel will be 25 years old in 25 - 12 = 13 years. Rachel's father will be 47 + 13 = 60 years old. Final answer: 60.