THIS IS FOR PRICING NOT FINANCE

Westside produces pillows with monthly unit sales and costs given as:

Unit Sales: 4000 units Price: $10.00 per unit Variable costs: $5.50 per unit Fixed costs: $15,000

1.Replacing goose feathers with synthetic filler will decrease the unit variable cost by $0.22. By what % would sales have to increase to assure the 5% price cut?