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When x is added to each of 8, 14, 20 and...

When x is added to each of 8, 14, 20 and 30, then the number, so obtained, in this order form a proportion. What is the mean proportion between (x-2) and (7x+2)?
जब x को 8, 14, 20 और 30 में जोड़ा जाता है, तो इस प्रकार इस क्रम में प्राष्त संख्याएँ समानुपात का निर्माण करती है | (x-2) और (7x+2) का मध्यानुपाती क्या है ?

A

25

B

16

C

24

D

12

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PINNACLE-RATIO & PROPORTION-EXERCISE
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  3. When x is added to each of 8, 14, 20 and 30, then the number, so obtai...

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  4. x is the 4th proportional to 12, 16 and 5, and 20, y, 15, 21 are in pr...

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  5. A sum of Rs. 3200 was to be divided among A, B, C and D in the ratio 4...

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  7. A, B and C are partners in a firm sharing profit in the ratio of 3:4:5...

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  8. What is the ratio of the mean proportional between 8.1 and 3.6 and the...

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  9. If x+y+z = 400 and x:y:z = 1:1:2. Then find the value of z ? यदि x+y...

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  10. The ratio of the number of boys and girls in a school 3:2. If there ar...

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  11. If l:m:n=1:2:4, then sqrt (5l^2+ m^2+n^2) is equal to : यदि l:m:n=1:...

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  12. The sum and difference between two numbers are 27 and 3 respectively. ...

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  13. If u+v = 84 and u-v = 4 then u:v is equal to: यदि u+v = 84 तथा u-v ...

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  14. The first, second and third items of a proportion are 24, 32 and 48. W...

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  15. If (2x-y) : (5x+3y) = 3:8, then find the value of (x^2+y^2) : (x^2-y^2...

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  16. Ramesh is three times elder to Suresh. After two years Ramesh’s age wi...

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  17. The ratio between the present ages of a mother and her son is 4 : 1. 1...

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  18. If a:b=2:3 and b:c = 2:3, then the value of (3a^2+b^2+c^2): (a^2+2b^2+...

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  19. Five year ago, the ratio of the ages of A and B was 3:4. Five years fr...

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