Abottle of orange juice costs $3.50 and a bottle of grape juice cost $5.30. what is the difference in the price between the orange juice and grape juice?

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.