The bargain counter puzzle

Puzzle

In describing his experiences at a bargain sale, Smith says that half of his money was gone in just thirty minutes, so that he had pennies where he had dollars before, and but half as many dollars as before he had pennies. Now, how much did he spend?

Answer

References

• Loyd, Sam [1914]. in Loyd, Sam, Jr.: Sam Loyd's Cyclopedia of 5000 Puzzles Tricks and Conundrums (in English). New York: Lamb Publishing company, page 58.