Five tractors

Five tractors plow the field in 4.8 hours. How long would it take to plow this field if, after 1.5 hours of work, two tractors went to a different field?

Correct answer:

t =  7 h

Step-by-step explanation:

4.8 5=1.5 5+(t1.5) (52)  3t=21  t=321=7  t=7=7 h



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