Brick puzzle

Puzzle

If a brick balances with three quarters of a brick and three quarters of a pound - then how much does a brick weigh?

Hints

Hint 1
Let b represent a brick. Set up the formula.

Hint 2
Formula: b = 3/4 b + 3/4 lb Now solve the equation.

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 3.