The field

Three tractors can plough a field in 6 hours. After 2 hours of working together, one tractor broke down. How long in total will it take to finish ploughing the field?

Final Answer:

t =  8 h

Step-by-step explanation:

3 6=3 2+(31) (t2)  2t=16  t=216=8  t=8=8 h



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