Answer:
6 dollars
Explanation:
2 dollars for 1 pound. Just imagine that these pounds are your sons so you have 3 sons (3 pounds) and you give 2 dollars to your first one (2 dollars 1 pound) so you have to give the same money for all the pounds therefore your second son gets 2 dollar so how much you gave your sons in total? 4 dollars but the last one didn't receive it. You have to give him 2 dollars too so now how much you gave? 6 dollars and all your sons got the money! Now they are happy thanks to you :).