Since 200 pairs of skis were sold and the contribution margin totaled$48,000 for the quarter, the contribution of each pair of skis toward covering fixed costs and toward earning of profits was $240 ($48,000 ÷200 pairs = $240 per pair). Another way to compute the $240 is:Selling price per pair...........................$750Less variable expenses:Cost per pair....................................$450Selling expenses..............................50 Administrative expenses($2,000 ÷ 200 pairs)..................... 10 510Contribution margin per pair................$240