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x is the 4th proportional to 12, 16 and ...

x is the 4th proportional to 12, 16 and 5, and 20, y, 15, 21 are in proportion. Then the value of (6x-y) is:
x, 12, 16 और 15 का चौथा समानुपाती है , तथा 20, y, 15, 21 समानुपात में हैं |(6x-y) का मान है :

A

9

B

18

C

13

D

12

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

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

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

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

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

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

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

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

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

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

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

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

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  19. The ratio of ages of A and B, four years ago, was 7:5. The ratio of th...

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  20. If a:b:c=1:3:5, what is the value of (4a-b+2c)/(3(a+b+c)) ? यदि a:b...

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