There are 80 guests at a party. Each guest ate 3 1/4 pieces of pizza. How many pieces of pizza did the gueats eat altogether?

To find the total number of pieces of pizza eaten, we need to multiply the number of guests by the number of pieces each guest ate.

80 guests × 3 1/4 pieces/guest = 80 × (13/4) = 260

So the guests ate 260 pieces of pizza altogether.