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1/12 :1/60 =       (a) 4:1 (b) 1:4...

`1/12 :1/60` =       (a) 4:1 (b) 1:4 (c) 5:1 (d) 1:5

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RD SHARMA-RATIO AND PROPORTION-All Questions
  1. An electric pole caste a shadow of length 20 metres at a time when ...

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  2. If a : b=3:4, then 4a :3b= (a)4:3 (b) 3:4 (c)1:1 (d) None of these

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  3. 1/12 :1/60 =       (a) 4:1 (b) 1:4 (c) 5:1 (d) 1:5

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

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

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

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

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  10. If a/2=b/3=c/4, then a : b : c= (a) 2:3:4 (b) 4:3:2 (c) 3:2:4 (d) No...

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

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

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

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

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

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  16. If 8: x :: 16 : 35 (a) 35 (b) 70 (c)(35)/2 (d) 24

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

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

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

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

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