Pool 2

The first supply by the pool fill for five hours and the second fill for six hours, drain should be drained for 15 hours. For how many hours the pool is full, when we open both inlet now and outlet open two hours later?

Result

x =  2.889 hod

Solution:

x6+x5x215=1 x=26/9 h\dfrac{x}{6}+\dfrac{x}{5}-\dfrac{x-2}{15}=1 \ \\ x = 26/9 \ h

x/6+x/5-(x-2)/15=1

9x = 26

x = 269 ≈ 2.888889

Calculated by our simple equation calculator.



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