Painter Pavel

Painter Pavel painted the fence for 16 hours and painter Petr the same fence painted for 13 h.

How long should take painted the fence together?

Result

x =  7.2 h

Solution:

116+113=1x  x=7.2 h\dfrac{1}{ 16 } + \dfrac{1}{ 13 } = \dfrac{1}{ x } \ \\ \ \\ x = 7.2 \ \text{h}



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