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If 5 men can cultivate 10 acres of land ...

If 5 men can cultivate 10 acres of land in 9 days,then by usnig theory of variation, find the number of days required to cultivate 30 acres of land by 25 men .

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The correct Answer is:
`(27)/(5) days`
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CALCUTTA BOOK HOUSE-VARIATION-EXERCISE
  1. 2 men can cultivate 6 acres of land in 4 days . By using theory of var...

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  2. 15 men can cultivate 18 bighas of land in 5 days. By using theory of v...

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  3. If 5 men can cultivate 10 acres of land in 9 days,then by usnig theory...

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  4. In a fort there was reserved enough food of 2400 soldires for 39 days...

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  5. If 5 men working 6 hours a day can complete a work in 20 days , in how...

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  6. The length of a pendulum varies inversely as the square of the number ...

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  7. If x prop yz^2, y prop ab^2 and zprop b/a , then find how x varies wit...

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  8. if in the variation x =ky and y=k'z, a,b,c and a' ,b',c' be two sets o...

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  9. If ax^2+2hxy+by^2 prop z^2 and (lx+my) prop z where a,b,h,l,m are co...

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  10. If (u^2+v^2) prop (x^2 +y^2 ) and uv prop xy then show that (u+v) pro...

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  11. The area of circle varies directly as its radius . If the radius be 2 ...

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  12. The volume of a pyramid varies jointly as the height and the area of...

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  13. The volume of a right circualr cylinder varies as the square of the r...

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  14. The distance through which a heavy body falls from rest varies as the ...

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  15. If a stone falls s ft in t seconds from rest s propt^2 . If it is obs...

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  16. Pressure (=P)in a liquid varies as the depth (=d) when the density (=D...

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  17. The time of going from one place to another varies directly as the dis...

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  18. A locomotive engine without wagons can go 35 km per hour and its speed...

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  19. Consumption of coal by an engine varies as the square of its speed. Wh...

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  20. A piece of diamond is broken into three pieces, the weights of the pie...

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