Question 1134183
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The difference in their ages is 30-2 = 28 years.<br>
When Ben is 3 times as old as Daniel, the difference in their ages will be twice Daniel's age.  (Daniel's age then, plus 2 times Daniel's age then, makes 3 times Daniel's age then.)<br>
So if x is Daniel's age then, Ben's age will be 3x; the difference between their ages will be 2x.<br>
But the difference between their ages is 28 years.  So 2x = 28  -->  x = 14.<br>
Daniel's age when Ben is 3 times as old will be 14; since Daniel is now 2, that will be in 12 years.