The sum of a man's age and his daughter's age is 50 years. Eight years from now, the man will be 2 times as old as his daughter will be then. Find the present age of each.

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This problem involves solving simultaneous equations.
You need to write two equations (one for the present, and one for 8 years time) to solve for two variables (the man's age and his daughter's age).
Can you do that?
Can you solve the equations together?