Painters

One painter could paint a school for 7 days. The second one for 6 days. It was necessary to paint the school in two days. Next painter was invited and all worked together. How long would this painter painted the school itself?

Correct answer:

x =  5.25 d

Step-by-step explanation:

2(17+16+1x)=1 x=1121716=5.25 d



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