Answer:
$10.60
Step-by-step explanation:
Cost:
| Store A | Store B |
| --------------------- | ----------- | ----------- |
| Little League | $4.23 | $3.71 |
| High School | $7.41 | $6.35 |
| College | $10.59 | $8.45 |
| Major League | $13.77 | $15.89 |
| --------------------- | ----------- | ----------- |
Hopefully this table is correct. I'll edit my answer if anything is wrong there.
If the cost of the cost of 1 high school baseball from Store A is x, then the cost of 10 is 10x:
$74.10
Same for the other store:
$63.50
Finally, find the difference:
The difference in cost is $10.60.