Lenny runs a cake store that sells only one type of cake with a variable cost per unit of $5. Current sales are 3,000 cakes per week at $15 per cake. A price promotion that cuts price to 75% of the current level is being considered. Please answer the following questions:

What is the current total contribution?

What size is this cake sales numbers increase in % terms? Write all answers as as a percentage, 80.23, not a decimal .8023. Do not include "%