Bob's Gift Shop sold 550 cards for Mother's Day. One salesman, Zachary, sold 2% of the cards sold for Mother's Day. How many cards did Zachary sell?

To find out how many cards Zachary sold, we can calculate 2% of the total number of cards sold for Mother's Day, which is 550.

First, we convert 2% to a decimal by dividing by 100:

\[ 2% = \frac{2}{100} = 0.02 \]

Next, we multiply the total number of cards by the decimal value of 2%:

\[ \text{Cards sold by Zachary} = 550 \times 0.02 \]

Now, performing the multiplication:

\[ 550 \times 0.02 = 11 \]

Therefore, Zachary sold 11 cards.