= 15h
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- Solution: Let $ h $ represent the number of hours worked. The total fee for the first consultant is $ 300 + 75h $, and for the second consultant it is $ 200 + 90h $. Setting these equal:
- + 75h = 200 + 90h
- Subtract $ 75h $ and $ 200 $ from both sides:
- Divide both sides by 15:
- h = \frac{100}{15} = \frac{20}{3}
- Thus, the total fees are equal after $ \boxed{\frac{20}{3}} $ hours.
