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Mathematics, 07.06.2021 19:10 elijahjacksonrp6z2o7

The amounts that two plumbers charge for their services are described. The first plumber charges a fixed fee of $40 for house calls and $15 per hour of work.
The second plumber charges a fixed fee of $30 for house calls and $19 per hour of work.
For what number of hours work do the first plumber and the second plumber charge the same total amount?

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