Sam is years oldis older brother Tom is 3 times as old as Sam. When Sam is 20 old will Tom be?

If Sam is currently ( x ) years old, then Tom is ( 3x ) years old. When Sam is 20, he will be ( 20 - x ) years older. Therefore, Tom will be ( 3x + (20 - x) = 2x + 20 ) years old at that time. If we set ( x ) to Sam's current age, you can find Tom's age when Sam is 20. For example, if Sam is currently 10, then Tom would be 40 when Sam is 20.