Final answer:
The markup rate of the notebook costing Php33.00 with an additional php3.30 is 10%.
Step-by-step explanation:
The markup rate of an item is calculated by dividing the markup value by the initial cost of the item, and then multiplying by 100 to get a percentage.
In this case, the owner adds a php3.30 markup on a notebook that costs Php33.00.
To find the markup rate, we divide 3.30 by 33.00, which equals 0.1, and then multiply by 100 to get a markup rate of 10%.