Answer:
If the bottles are greater than 38.4 oz then the total volume would be greater than 3 gallons.
If the bottles are less than 38.4 oz the total volume would be less than 3 gallons.
Explanation:
Needs more info, specifically what size shampoo bottles.
We can still figure out some info from what is given though...
let's convert to ounces since most shampoo bottles are ounces not gallons...
3 gallons=384 ounces
figure out what size bottle would exactly equal 384 oz when there are 10 bottles...
10x=384
x=38.4
If the bottles are greater than 38.4 oz then the total volume would be greater than 3 gallons.
If the bottles are less than 38.4 oz the total volume would be less than 3 gallons.