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?
Rachel's grandfather is 12 x 7 = <<12*7=84>>84 years old.
Her mother is 84/2 = <<84/2=42>>42 years old.
Her father is 42 + 5 = <<42+5=47>>47 years old.
Rachel will be 25 years old in 25 - 12 = <<25-12=13>>13 years.
Rachel's father will be 47 + 13 = <<47+13=60>>60 years old.
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