Acme Financial issues letters of credit to importers for overseas purchases. The company charges a nonrefundable application fee of $4,000 and, on approval, an additional service fee of 2.0% of the amount of credit requested. The company's budget for the year just completed included fixed expenses for office salaries and wages of $645,720, leasing office space and equipment of $59,600, and utilities and other operating expenses of $10,400. In addition, the budget also included variable expenses for supplies and other variable overhead costs of $1,160,000. The company estimated these variable overhead costs to be $2,000 for each letter of credit approved and issued. The company approves, on average, 75% of the applications it receives. During the year, the company received 600 requests and approved 70% of them. The total variable overhead was 10.0% higher than the standard amount applied; the total fixed expenses were 5.0% lower than the amount budgeted. In addition to these expenses, the company paid a $270,000 insurance premium for the letters of credit issued. The insurance premium is 1.0% of the amount of credits issued in U.S. dollars. The actual amount of credit issued often differs from the amount requested due to fluctuations in exchange rates and variations in the amount shipped versus the amount ordered by importers. The strength of the dollar during the year decreased the insurance premium by 10.0%. Requirements: (Each Requirement with solution and answer) 1. The variable overhead application rate (per letter of credit issued) is ___ 2. The insurance cost percentage is ___ 3. The fixed overhead application rate (per letter of credit issued) is ___ 4. The total overhead flexible-budget variance for the period is __ 5. The overhead volume variance for the period is ___ 6. The total overhead cost variance for the year is ___