4 tractors are required to cultivate 360...

4 tractors are required to cultivate 360 bighas of land in 20 days, Let us find, how many tractors are needed to cultivate 1800 bighas of land in 10 days.

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2 men can cultivate 6 acres of land in 4 days . By using theory of variation , find the number of men required to cultivate 18 acres of land in 8 days.

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JNAN PUBLICATION-Revision of Previous Lessons-EXAMPLE

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