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If a : b : c=2:3:4,\ t h e n1/a :1/b :1/...

If `a : b : c=2:3:4,\ t h e n1/a :1/b :1/c` is equal to `1/4:1/3:1/2` b. `4:3:2` c. `6:4:3` d. none of these

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RS AGGARWAL-RATIO AND PROPORTION-All Questions
  1. If a : b=b : c ,\ t h e n\ a^4: b^4 would be equal to a c : b^2 ...

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  2. If x : y=3:4\ a n d\ a : b=1:2, then the value of (2x a+y b)/(3y b-...

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  3. If a : b : c=2:3:4,\ t h e n1/a :1/b :1/c is equal to 1/4:1/3:1/2 b. 4...

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  4. If 1/x :1/y :1/z=2:3:5\ t h e n\ x : y : z is equal to 2:3:5 b. 15 : 1...

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  5. If (x+y):(x-y)=4:1,\ t h e n\ (x^2+y^2):(x^2-y^2)=? 8: 17 b. 17 :8 c....

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  6. If a :(b+c)=1:3\ a n d\ c :(a+b)=5:7,\ t h e\ b :(a+c) is equal to 1:2...

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  7. If a : b=3:4,\ b : c4:7,\ t h e n(a+b+c)/c is equal to 1 b. 2 c....

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  8. If A : B : C=2:3:5 and A=x %\ of\ (B+C), then x is equal t...

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  9. x , y , z ,\ u are real nubs such that x : y=y : z=z : u\ a n d\ x ...

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  10. If a : b : c=2:3:4\ a n d\ 2a-3b+4c=33 , then the value of c is ...

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  11. If p : q : r=1:2:4,\ t h e n\ sqrt(5p^2+q^2+r^2) is equal to 5 b...

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  12. If A : B : C=2:3:4, then the ratio A/B : B/C : C/A is equal t...

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  13. If a : b=5:7\ a n d\ c : d=2a :3b ,\ t h e n\ a c : b d is 10 : 21 b...

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  14. If a/b=b/c=c/d ,\ t h e n(b^3+c^3+d^3)/(a^3+b^3+c^3) will be equ...

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  15. If p: q=3:4,\ r : s=8:5\ a n d\ x : y=10 :6, then p s x : q r y is...

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  16. If a : b=c : d then (m a+n c)/(m b+n d) is equal to m : n b. ...

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  17. Let a/b\ :-b/a=x : ydot\ If (x-y)={a/b+b/a}\ t h e n\ x is e...

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  18. If (a+b)/c=(b+c)/a=(c+a)/b=k ,\ t h e n\ k is equal to 0 b. 1 c....

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  19. If a : b=2:3\ a n d\ b : c=4:5,\ t h e n(a+b):(b+c) is equal to ...

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  20. If a ; b=c : d=e :f=1:2,\ t h e n\ (3a+5c+7e):(3b=5d+7f) 1:2 b. 1:...

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