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When as particular number is subtract...

When as particular number is subtracted from each of 7,9,11 and 15, the resulting numbers are in proportion. The number to be subtracted is `1` b. `2` c. `3` d. `5`

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RS AGGARWAL-RATIO AND PROPORTION-All Questions
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  6. What number must be added to each of the numbers 7, 11 and 19 so th...

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  7. Two numbers are in the ratio of 3 : 5. If 9 is subtracted from each...

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  8. In a certain company, the ratio of the number of managers to the nu...

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  9. What number has to be added to the terms of 3 : 5 to make the ratio...

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  10. The ratio of the number of ladies to that of gents at a pin to was ...

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  11. In a school the ratio of boys and girls is 4 : 5 respectively. When...

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  12. Two numbers are in the ratio 1 1/2:2 2/3dot When each of these i...

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  13. Three numbers A, B and C are in the ratio 1 : 2 : 3. Their average ...

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  14. Two numbers are in the ratio 2 : 3. If 2 is subtracted from the fir...

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  15. 20 litres of a mixture contains milk and water in the ratio of 5:3....

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  16. When 1 is added to each of the two given numbers their ratio become...

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  17. The ratio of number of boys to that of girls in a group becomes 2 :...

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  18. Two vessels contain spirit of 0.5 and 0.75 concentrations. If 2 lit...

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  19. The population of a city is 9000 in a particular year. If there is ...

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  20. A barrel contains a mixture of seine and water in the ratio 3 : 1. ...

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