In September, Numbers Incorporated sold 45,000 units of its only product for $394,000, and incurred a total cost of $365

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In September, Numbers Incorporated sold 45,000 units of its only
product for $394,000, and incurred a total cost of $365,000, of
which $39,000 was fixed costs. The flexible budget for September
showed total sales of $440,000. Among variances of the period were:
total variable cost flexible-budget variance, $7,500U; total
flexible-budget variance, $76,000U; and, sales volume variance, in
terms of contribution margin, $41,000U.
The amount of operating income in the flexible budget (FB) for
September was: