4-member 23681

A four-member group planned to paint the school for ten days. After two days, one member fell ill. If they worked with the same effort, how many days were the school painted?

Correct answer:

t =  12.6667

Step-by-step explanation:


4·10=2·4+(4-1)·(t-2)

3t = 38


t = 38/3 = 12.66666667

t = 38/3 ≈ 12.666667

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