Repair pipe

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

Correct answer:

x =  27.3333 d

Step-by-step explanation:

20 30=20 14+(20+4) (x14)  24x=656  x=24656=27.33333333  x=38227.333333=27.3333 d



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