Tractors

6 tractors started plowing the field that them together take 12 days.

Agronomist hesitates to

A) after 2 days to withdraw 2 tractors, or
B) after 3 days to withdraw 3 tractors.

Help him which of these two cases will be plowing done sooner.

Result




Solution:

Solution in text 1=
Solution in text 1= : Nr. 1







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