How do Huck and Tom Sawyer get rich? (CH 1-6)

The Adventures of Huckleberry Finn begins where the The Adventures of Tom Sawyer leaves off. At the end of the previous novel, Huck and Tom find a treasure of twelve thousand dollars, which they divide. Judge Thatcher takes their money and invests it in the bank at six percent interest, so that each boy earns a dollar a day on their money.

Why does Huck claim to be rich