Quantitative Apitude-Ratio & Proportion

Quantitative Apitude-Ratio & Proportion
11. The mean proportion between 0.32 and 0.02 is :
  • 0.8
  • 0.08
  • 0.008
  • 0.4
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12. The ratio of third proportional to 12 and 30 and the mean proportional of 9 and 25 is :
  • 2 : 1
  • 5 : 1
  • 7 : 15
  • 9 : 14
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13. In a ratio which is equal to 0.06 of another number is 12, then consequent is :
  • 9
  • 16
  • 20
  • 24
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14. If 0.4 of a number is equal to 0.06 of another number, then the ratio o the number is :
  • 2 : 3
  • 3 : 4
  • 3 : 20
  • 20 : 3
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15. A fraction which bear the same rartio to 1/27 that 3/11 does to 5/9, is :
  • 1/55
  • 55
  • 1/11
  • 3/11
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16. if a + b : b + c : c + a = 6 : 7 : 8 and a + b + c = 14, then the value of c is:
  • 6
  • 7
  • 8
  • 14
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17. If a/3=b/4=c/7, then a+b+c/c is equal to :
  • 7
  • 2
  • 1/2
  • 1/7
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18. If x/5 = y/8, then (x + 5) : ( y + 8) is equal to
  • 7
  • 2
  • 1/2
  • 1/7
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19. If x/5 = y/8, then (x + 5)  (y + 8) is equal to :
  • 3 ; 5
  • 13 : 8
  • 8 : 5
  • 5 : 8
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20. If x ; y = 6 : 5, then (5x + 3y) : (5x - 3y) is equal to :
  • 2 : 1
  • 3 : 1
  • 5 : 3
  • 5 : 2
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Quantitative Aptitude
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