[11 marks] Wipeco Industries uses flexible budgets to control its selling expenses. Monthly sales are expected to range from $170,000 to $200,000. Variable costs and their percentage relationship to sales are: Sales Commissions 8%, Advertising 4%, and Traveling 3%. Fixed selling expenses will consist of Sales Salaries $32,000, Depreciation on Delivery Equipment $7,000, and Insurance on Delivery Equipment $1,000. The actual selling expenses incurred in September 2019 by Wipeco Industries are as follows. Fixed Expenses Sales salaries $32,000 Variable Expenses Sales $11,000 commissions Advertising 7,000 Travel 5,500 Depreciation Insurance 7,000 1,500 Instructions (a) Given that the September sales were $170,000, prepare a flexible budget performance report. (9 marks) (b) Explain why the flexible budget is more informative then the static budget. (2 marks)