Tractors

5 tractors will plow the field for 8 hours. In 2 hours, 1 tractor broke down. How long do the remaining tractors complete the plow?

Result

t =  7.5 h

Solution:


5*8 = 5*2 + (5-1)*t

4t = 30

t = 152 = 7.5

Calculated by our simple equation calculator.








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