Variance analysis, sales-mix, and sales-quantity variances. Blank Slate Inc. (BSI) produces tablet computers. BSI markets three different handheld models. SlatePro is a souped-up version for the executive on the go; Slate is a consumer-oriented version; and SlateLite is a stripped down version for the young adult market. You are BSI's senior vice-president of marketing. The CEO has discovered that the total contribution margin came in lower than budgeted, and it is your responsibility to explain to him why results are different from the budget. Budgeted and actual operating data for the company's third quarter of 2015 are as follows: Budgeted Operating Data, Third Quarter 2015 Variable Cost Contribution Sales Volume in Units Selling Price per Unit Margin per Unit SlatePro $379 $182 $197 12,500 Slate 269 98 171 37,500 SlateLite 149 65 84 50,000 100,000 Actual Operating Data, Third Quarter 2015 Variable Cost Contribution Sales Volume Selling Price per Unit Margin per Unit in Units SlatePro $349 $178 $171 1,000 Slate 285 92 193 44,000 SlateLite 102 73 29 55,000 110,000 Required 1. Compute the actual and budgeted contribution margins in dollars for each product and in total for the third quarter of 2015