Question 135
The water in the reservoir evaporates constantly, and water is added through 3 taps. If there were no evaporation, these 3 taps could fill the empty reservoir in 2 weeks. Considering evaporation, it takes six weeks to fill the empty reservoir using only taps 1 and 2. If tap 3 is turned on alone, $\frac{1}{3}$ of the total water of the reservoir evaporates in five weeks. How long will it take all the water of a full reservoir to evaporate if all the taps are turned off?