###Human: Theo, Mason, and Roxy are siblings.  Theo drinks 8 cups of water every day. Mason drinks 7 cups of water.  Roxy drinks 9 cups of water every day.  In one week, how many cups of water do the siblings drink together?, ### Assistant: Everyday, the three siblings drink 8 + 7 + 9 = 24 cups of water.
In one week, they drink a total of 24 x 7 = 168 cups of water. 
 So the answer is :  168