Tractors

Six tractors plowing the field for 8 days. After two days, two tractors broke down. How many days were prolonged work in the field?

Correct answer:

x =  3 d

Step-by-step explanation:


6·8 = 2·6+(x+(8-2))·(6-2)

4x = 12


x = 12/4 = 3

x = 3

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