One operation of rotavator dose a job equivalent to a) One ploughing + two harrowing b) One harrowing + two ploughing c) One ploughing only d) One harrowing only

One operation of rotavator dose a job equivalent to
a) One ploughing + two harrowing
b) One harrowing + two ploughing
c) One ploughing only
d) One harrowing only
by

1 Answer

Answer :

a) One ploughing + two harrowing
by

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