Painters 4

One painter will do the job for 12 days. After a 4 1/3 day, he comes second to help him complete work together for eight days. How long would work the second painter himself?

Correct answer:

x =  11 d

Step-by-step explanation:

a=431=4+31=34 3+1=312+1=3134.3333 s=8 b=8a=8313=38 3313=324313=32413=3113.6667  s/12 + b/x = 1  x 12s+b=x x 128+3.6666666666667=x  x 8/12+3.6666666666667=x  4x=44  x=444=11  x=11=11 d

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