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If a : b=4:5 and b : c=2:3, then a : c ...

If `a : b=4:5` and `b : c=2:3,` then `a : c`
(a)`4:3`
(b) `8: 15`
(c) 8:9
(d) `5:3`

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RD SHARMA ENGLISH-RATIO AND PROPORTION-All Questions
  1. 1/12 :1/60 =       (a) 4:1 (b) 1:4 (c) 5:1 (d) 1:5

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  2. The simplest form of 24 : 36\ i s (a)9:4\ (b) 4:9 (c)3:2 (d) 2:3

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  3. If a : b=4:5 and b : c=2:3, then a : c (a)4:3 (b) 8: 15 (c) 8:9 ...

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  4. If p : q=2:5, then (25 p+14 q)/(5p+7q)= (a)8:5 (b) 5:8 (c) 8:3 ...

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  5. A ratio equivalent to 2:5 is (a)6: 15 (b) 4:5 (c) 5:2 (d) 5:4

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  6. If 2a=3b=4c , then a : b : c= (a)2:3:4 (b) 3:4:6 (c)4:3:2 (d) ...

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  7. If 2x=3y\ a n d\ 4y=5z , then x : z= (a) 4:3 (b) 8: 15 (c) 3:4 (...

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  8. If a/2=b/3=c/4, then a : b : c= (a) 2:3:4 (b) 4:3:2 (c) 3:2:4 (d...

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  9. If 1/a :1/b :1/c=3:4:5, then a : b : c (a) 5:4:3 (b) 20 : 15 : 12 ...

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  10. If a : b=5:7\ a n d\ b : c=6: 11 , then a : b : c= (a) 35 : 49 : 66 ...

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  11. If x : y=1:1,\ t h e n\ (3x+4y)/(5x+6y)= (a) 7/(11) (b) (17)/(11) ...

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  12. If a : b=2:5, then (3a+2b)/(4a+b)= (a) (16)/(13) (b) (13)/(16) (c)...

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  13. The mean proportional of a\ a n d\ b is 10 and the value of a is four ...

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  14. If 8: x :: 16 : 35 Find the value of x (a) 35 (b) 70 (c)(35)/2 (d...

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  15. The mean proportional of 6 and 24 is (a)15                         ...

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  16. The boys and girls in a school are in the ratio 9: 5. If the number ...

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  17. If the first three terms of a proportion are 3,5 and 21 respectively...

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  18. What must be added to each term of the ratio 9: 16 to make the ratio...

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  19. What least number is to be subtracted from each term of the ratio 15...

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  20. If Rs 840 is divided between P\ a n d\ Q in the ratio 3:4, then P ' ...

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