Repair pipe

20 workers had to repair broken pipes in 30 days. After fourteen days, four laborers joined them. How long did the pipe repair work last?

Result

x =  27.333 d

Solution:


20*30 = 20*14 + (20+4)*(x-14)

24x = 656

x = 823 ≈ 27.333333

Calculated by our simple equation calculator.



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