You can put this solution on YOUR website! kate's father is 50 years old. kate is 24 years old now. how many years ago was kate's father three times as old as her.
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let x=years ago when kate's father was 3 times as old as kate
50-x=3(24-x)
50-x=72-3x
2x=22
x=11
years ago when kate's father was 3 times as old as kate=11