Each wall of a 3 sided shower has 8 tiles running the width of the wall and 20 tiles running the height of the wall. How many tiles are in the shower?
Reason slowly and give your answer.
480
There are 8 tiles along the width and 20 tiles along the height for a total of 8 * 20 = 160 tiles.

Each wall has 160 tiles and there are 3 walls so there are 160 * 3 = 480 tiles in the shower.

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The answer is 480