At an ice cream shop, three flavors are increasing in demand. Last year, banana, pumpkin and Rocky road ice cream made up 12% of
the ice cream sales. This year, the same three ice creams made up 16.9% of ice cream sales. The Rocky road doubled, the banana sales increases by 50%, and the pumpkin sakes increased by 20%. If the Rocky road ice cream had one less percent than the banana ice cream, find the percentage of ice cream sales each individual ice cream made last year.
