Green

The green combine harvests the field in 18 hours. If it works together with the red combine, they will harvest the field in 6 hours. How long would the red combine harvest alone work in the field?

Correct answer:

x =  9 h

Step-by-step explanation:

6 (181 + x1) = 1  6 (181x + 1) = x  6 (181 x+1)=x  6 (1/18 x+1)=x  12x=108  x=12108=9  x=9=9 h



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