Painters

One painter could paint a school for seven days. The second one does it for six days. It was necessary to paint the school in two days. The next painter was invited, and all worked together. How long would this painter paint the school itself?

Correct answer:

x =  5.25 d

Step-by-step explanation:

2(71+61+x1)=1 x=2171611=5.25 d



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