A grandfather is 56 years old, and his grandson is 14 years old. After how many years will the grandfather be twice as old as his grandson?
A grandfather is 56 years old, and his grandson is 14 years old. After how many years will the grandfather be twice as old as his grandson?
Answer: After 28 years.
Let X be the number of years we are looking for.
Then, 56+X=2(X+14). Solving for X, we get X=28.
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