Tess's Tidbits sells three different snack packs. The weighted average contribution margin is $15.00 and total fixed costs are $20,000 per month. Of her total sales, 40% are for the deluxe snack pack, 35% are standard snack packs and 25% are mini snack packs. In order to earn the target profit of $10,000 per month, Tess needs to sell (___?__) deluxe snack packs each month.