Hi there! The answer to this problem would be 36.64$.
Step By Step:
So there is three teachers and they all brought something.
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| Mrs.Maiers  | 7.68$                         |
| Mr.Lang    | 11.52$                        |
| Mrs.Connor | 17.64$ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â |
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Total Cost: 36.64