Final answer:
The total revenue generated from the sale of all these pairs of footwear is $2,840
Step-by-step explanation:
To calculate the total revenue generated from the sale of all these pairs of footwear, we need to find the total amount of money earned from selling each type of footwear and then add them together.
For sneakers, the retailer sold 6 pairs for $65 each, so the total revenue from sneakers is 6 × $65 = $390.
Similarly, for leather shoes, the revenue is 11 × $145 = $1,595.
For boots, the revenue is 3 × $225 = $675.
And for sandals, the revenue is 9 × $20 = $180.
Adding all the revenues together, the total revenue generated from the sale of all these pairs of footwear is $390 + $1,595 + $675 + $180 = $2,840.