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When x is subtracted from each of 21, 22, 60 and 64, the numbers so obtained, in this order, are in proportion. What is the mean proportional between (x+1) and (7x+8).
जब x को 21, 22, 60 तथा 64 में से घटाया जाता है, तो इस प्रकार प्राप्त संख्याएं समानुपात में हैं| (x+1) तथा (7x+8) के बीच माध्य समानुपाती ज्ञात करें |

A

27

B

18

C

24

D

21

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PINNACLE-RATIO & PROPORTION-EXERCISE
  1. A started a business with a capital of Rs. 54000 and admitted B and C ...

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  2. If x is added to each of 12, 28, 21 and 45, the numbers so obtained, i...

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  3. When x is subtracted from each of 21, 22, 60 and 64, the numbers so ob...

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  4. The ratio of present ages of A and B is 8 : 9. After 9 years, the rati...

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  5. The ratio of present ages of A and B is 8: 15. Eight years ago,the rat...

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  6. If a : b = 4 : 5, then (2a + 3b) : (3a + 2b) is equal to : यदि a :...

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  7. If a : b = 5 : 3, then (8a - 5b) : (8a + 5b) is equal to : यदि a : b...

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  8. If a : b = 2 : 3 and c : b = 5 : 6 , then a : b : c is equal to: यदि...

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  9. If a : b = 5 : 8 and c : b = 4 : 3, then a : b : c is equal to: यदि ...

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  10. If a : b = 2 : 3, then (5a - 2b) : (5a + 2b) is equal to: यदि a : b ...

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  11. If a : b = 2 : 3, then (5a + 3b) : (6a - 2b) is equal to : यदि a : b...

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  12. If a:b=5:7, then (5a-3b):(4a-2b) is equal to :

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  13. The ratio of the present ages of A and B is 6 : 5. Four years ago, thi...

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  14. Eight years ago, the ratio of ages of A and B was 9: 10. The ratio of ...

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  15. Two numbers A and B are in the ratio 5 : 2. If 4 is added to each numb...

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  16. Incomes of A and B are in the ratio of 5 : 3 and their expenditures ar...

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  17. Two numbers are in the ratio 7:5. On diminishing each of them by 40, t...

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  18. Two numbers are in the ratio 7:5. On diminishing each of them by 40, t...

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  19. Two numbers are in the ratio 3:4. On increasing each of them by 30, th...

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  20. What is the ratio of mean proportional of 14.4 and 3.6 and the third p...

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