Juniper Corp. makes three models of insulated thermos. Juniper has $400,000 in total revenue and total variable costs of $240,000 Its sales mix is given below: Required: 1. Calculate the (overall) weighted-average contribution margin ratio. 2. Determine the total sales revenue Juniper needs to break even if fixed costs are $80,000. 3. Determine the total sales revenue needed to generate a profit of $90,000. 4. Determine the sales revenue from each product needed to generate a profit of $90,000