A says to B I am twice as old as you were when I was as old as you are ." The sum of their present ages is 63
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A's age be 2x and B's age be x
2x+x=63
3x=63
x=21
2x=2×21
2x=42
2x+x=63
3x=63
x=21
2x=2×21
2x=42
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