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If 10 men can do a certain amount of wo...

If 10 men can do a certain amount of work in 6 days, 15 men can do the same amount of work in ________ days.

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PEARSON IIT JEE FOUNDATION-RATIO, PROPORTION AND VARIATION-Very Short Type Questions
  1. Express the ratio 1. 5 litres : 250 ml in the lowest terms.

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  2. If P and Q^(2) are in direct proportion. If Q doubles then P become...

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  3. If 10 men can do a certain amount of work in 6 days, 15 men can do t...

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  4. x varies directly as the cube of y, x is 32 when y is 4, then what i...

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  5. A varies inversely as the square of B and A is 1, when B is 3. What ...

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  6. Express the ratio 3/5 : 7/9 in the lowest terms.

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  7. The mean proportional between 4 and 8 is 6. (True/False)

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  8. If 7 3/4 : 11 2/3 = 93 : ( 2x + 10), then what is the value of x ?

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  9. If x : y = 5 : 6 and y : z = 3 : 7 , then find x : z.

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  10. If a : b =2 : 3 ," then find "(3a - b) : ( 2a+ 3b).

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  11. Two numbers are in the ratio 3 : 4 When 7 is added to each, the r...

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  12. What is the compounded ratio of 6 1/2 : 8 2/3 and 3 3/4 : 5 1/3?

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  13. If (x + 2) , 3, (3x-4) and 6 are in proportion, Find x .

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  14. Find the fourth proportional of 4, 9 and 12.

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  15. Write a ratio equal to 7 : 9 in which antecedent is 63.

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  16. If a/b = c/d = e/f = 2/5, then (3a+4c+9e)/(3b+4d+9f) = .

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  17. If (3a+2b) : (5a+7b) = 1:2 , then find a : b.

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  18. Arrange the ratios 4 : 5, 6 : 7, 2 : 3 and 10 : 11 in the increasing...

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  19. A certain sum of money is distributed among A, B and C in the ratio of...

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  20. When a = 3, 5 , 8,10,…, b=9, 15, 24, 30, …, then a and b are in .

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