Quazi has a wheat business. He purchases wheat from a local wholesaler at a particular cost per pound. The price of wheat at his stores is $3 per pound. His faulty spring balance reads 0.9 pounds for a pound. Also, in the festival season, he gives a 10% discount on the wheat. He found that he made neither a profit nor a loss in the festive season. At what price (per pound) did Quazi purchase the wheat from the wholesaler?