Solve using the Contribution Margin approach.

The Woodstock plant of Goodstone Tires manufactures a single line of automobile tires. In its first fiscal quarter, the plant had total revenue of $4,500,000 and net income of $900,000 from the production and sale of 60,000 tires. In the subsequent quarter, the net income was $700,000 from the production and sale of 50,000 tires. Calculate the unit selling price, the total revenue in the second quarter, the variable costs per tire, and the total fixed costs per calendar quarter.