A bottle of shampoo normally contains 24 ounces and costs $12. How much per ounce does this normal bottle cost the consumer?

The company that produces and sells this shampoo is trying to decide on a promotional bottle that contains more ounces.

Option 1: a bottle that contains 50% more for $3 more.

Option 2: a bottle that contains 100% more for only 50% more in price.

Option 3: a bottle that contains 33 1/3% more for free.

Option 4: a bottle that contains 25% more for only 16 2/3% more in price.

Which would be a better deal for the consumers? Determine this by calculating how many ounces are in each promotional bottle. How much does it cost the consumer per ounce?

Many companies do give 33 1/3% more free, but instead of putting that on the bottle they put 33% more free? Why do you think they do this?