Hannah is making muffins. the recipe calls for 2/3 cup of milk to make 8 muffins. what is the unit rate for cup of milk per muffin

There are a total sales of 2,000 dollars on monday on tuesday sales dropped 10% on wednesday sales dropped another 20% compared with tuesday from wednesday to thursday sales increases by an equal amount to 25% of monday total sales what is the net change in dollars on total sales from monday to tuesday