Final answer:
To find the number of electronic keyboards sold in Delaware, divide the number sold in Ohio by the ratio between the two states. The average is approximately 14,482 keyboards sold in Delaware each year.
Step-by-step explanation:
To find the number of electronic keyboards sold in Delaware, we need to divide the number sold in Ohio by the ratio between the two states. The average number of electronic keyboards sold in Ohio is 130,338. The ratio between Ohio and Delaware is 9:1, which means for every 9 keyboards sold in Ohio, 1 is sold in Delaware. So, to find the number sold in Delaware, we divide 130,338 by 9:
Number of electronic keyboards sold in Delaware = 130,338 / 9 = 14,482
Therefore, on average, approximately 14,482 electronic keyboards are sold each year in Delaware.