An income statement for Sams Bookstore for the first quarter
Solution
Sales = $950,000
 Selling Price per book = $50
 Selling Expense = $104,000
 Administrative Expense = $112,000
 Variable Selling Expense per book = $4
Selling and Administrative Expense = Selling Expense + Administrative Expense
 Selling and Administrative Expense = $104,000 + $112,000
 Selling and Administrative Expense = $216,000
Variable Administrative Expense per book = 3% * Selling Price per book
 Variable Administrative Expense per book = 3% * $50
 Variable Administrative Expense per book = $1.50
Variable Selling and Administrative Expense per book = Variable Selling Expense per book + Variable Administrative Expense
 Variable Selling and Administrative Expense per book = $4.00 + $1.50
 Variable Selling and Administrative Expense per book = $5.50
Number of books sold = Sales / Selling Price per book
 Number of books sold = $950,000 / 50
 Number of books sold = 19,000
Variable Selling and Administrative Expense = Variable Selling and Administrative Expense per book * Number of books sold
 Variable Selling and Administrative Expense = $5.50 * 19,000
 Variable Selling and Administrative Expense = $104,500
Fixed Selling and Administrative Expenses = Selling and Administrative Expense - Variable Selling and Administrative Expense
 Fixed Selling and Administrative Expenses = $216,000 - $104,500
 Fixed Selling and Administrative Expenses = $111,500
Cost formula for Selling and Administrative Expenses is:
Y = $5.50 * X + $111,500, where Y is Selling and Administrative Expense and X is number of books sold

