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120 men can lay a road 80 km long in 20 ...

120 men can lay a road 80 km long in 20 days. In how many days can 100 men lay a road of length 90 km?

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The correct Answer is:
27 days
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PEARSON IIT JEE FOUNDATION-RATIO, PROPORTION AND VARIATION-TEST YOUR CONCEPTS
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  10. If x:y=2:5, then (10x+3y):(5x+2y) is .

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  11. The mean proportional between 2 and 32 is .

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  13. X and Y share marbles in the ratio of 5 : 6. Find X's share, if X got ...

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  14. If bc:ac:ab=1:3:5, then find (a)/(bc):(b)/(ca).

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  15. If a:b:c:d=2:3:5:7 and a+b=60, then c+d is.

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  16. The monthly expenditure of a family o 9 members is Rs 891. What will b...

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  17. Write the result after applyin componendo and dividendo to 3a^(2)+2b^(...

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  18. The volume of a sphere (V) varies directly as the cube of its radius....

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  19. The ratio of the number of students in schools X and Y is 4:7. if 15 s...

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