#### Answer

11 stamps

#### Work Step by Step

We can find the answer by dividing the total amount of the cost of each stamp.
t=5$\div$0.43
t=11.68
That means we can buy 11 full stamps and 0.68 of another stamp and since we cannot have 0.68 of a stamp, that one does not count. That means that we have 11 total stamps.