Sales Variances Presented is information pertaining to an item sold by Wheeping Creek General Store: Actual Budget 600 Unit sales 650 $ 38 $ 40 Unit selling price Unit standard variable costs 31 32 Unit contribution margin $7 $ 8 Revenues Variable costs $ 24,700 $ 24,000 21,150 19,200 $ 4,550 $ 4,800 Contribution margin at standard costs Compute the revenue, sales price, and the sales volume variances. Revenue variance $ F - Sales price variance $ F Sales volume variance $ F