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If a : b=3:4, then 4a :3b= (a)4:3 (b) ...

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

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

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

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

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

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