 
 <translate> Explain simply why 225 is the correct answer to: A typical tournament of tennis has 4 rounds. There are 8 games in the first round, 4 in the second round, 2 in the third round and 1 during the finals. If each game requires new tennis balls, and on average each game uses 5 cans of tennis balls, how many tennis balls in total are used at the end of the tournament if each can has 3 tennis balls?. Explanation: <hau> Bayyana kawai dalilin da yasa 225 shine amsar daidai ga: Gasar wasan tennis na yau da kullun tana da zagaye 4. Akwai wasanni 8 a zagaye na farko, 4 a zagaye na biyu, 2 a zagaye na uku da 1 a lokacin wasan karshe. Idan kowane wasa yana buƙatar sabbin ƙwallon tennis, kuma a matsakaita kowane wasa yana amfani da gwangwani 5 na ƙwallon tennis, yawan ƙwallon tennis nawa aka yi amfani da su a ƙarshen gasar idan kowane gwangwani yana da ƙwallon tennis 3?. Bayani: 