Before the start of the Olympics, hockey pucks increased in price by $10 \%$, and after the Olympics, they decreased in price by $10 \%$.

When were the pucks more expensive - before the price increase or after the price decrease?
$0.9 \cdot 1.1 = 0.99$. This means that before the price increase, the pucks were more expensive.

Answer

Before the price increase.