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If a=2b ,\ then a : b= (a) 2:1 (b)...

If `a=2b ,\ ` then `a : b=`
(a) 2:1
(b) 1:2
(c) 3:4
(d) 4:3

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RD SHARMA ENGLISH-RATIO, PROPORTION AND UNITARY METHOD-All Questions
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  2. If a, b, c are in continued proportion, then which of the following to...

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  3. If a=2b ,\ then a : b= (a) 2:1 (b) 1:2 (c) 3:4 (d) 4:3

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  4. If 4:3=x^2: 12 , then the value of x\ (x >0)dot (a) 16 (b) 4 (c)...

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  5. If x : y=2:3 and y : z=2:3, then x : z= (a) 2:3 (b) 3:4 (c) 5:...

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  6. If 80 : 60=x : 12 , then x= (a) 16 (b) 7 (c) 24 (d) 50

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  7. Two numbers are in the ratio 3:5 and their sum is 96. The larger num...

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

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  9. If six men can do a piece of work in 6 days, then 3 men can do same ...

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  10. If 4:5::x : 45, then x= (a) 54 (b) 60 (c) 36 (d) 30

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  11. If 343 is the third proportional of a and b , where a : b=1:7, then th...

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  12. The first three terms of a proportion are 12, 21 and 8 respectively....

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  13. If a : b=2:5, . find the value of (3a+2b)/(4a+b)

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  14. The mean proportional of a and b is 10 and the value of a is four time...

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  15. A given quantity of rice is sufficient for 60 persons for 3 days. H...

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  16. 12 men can reap a field in 25 days. In how many days can 20 men reap...

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  17. Shikah and Aarushi are sister. The ratio of their ages is 3:4. Their p...

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  18. The ratio of copper and zinc in an alloy is 5:3 . If the weight of ...

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  19. Divide Rs. 3450 among A ,\ B\ a n d\ C in the ratio 3:5:7

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  20. 40 men can finish a piece of work in 26 days. How many men will be ...

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