The master budget of Vaughn Manufacturing shows that the planned activity level for next year is expected to be 50000 machine hours. At this level of activity, the following manufacturing overhead costs are expected: A flexible budget for a level of activity of 60000 machine hours would show total manufacturing overhead costs of $1512000.$1410000.$1656000.$1692000. A company's planned activity level for next year is expected to be 100000 machine hours. At this level of activity, the company budgeted the following manufacturing overhead costs: A flexible budget prepared at the 80000 machine hours level of activity would show total manufacturing overhead costs of $405600.$525600.$507000.$501600