Ratio & Proportion Questions and Answers

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Q11
The mean proportion between 0.32 and 0.02 is :
  • A 0.8
  • B 0.08
  • C 0.008
  • D 0.4
Answer: Option B
Q12
The ratio of third proportional to 12 and 30 and the mean proportional of 9 and 25 is :
  • A 2 : 1
  • B 5 : 1
  • C 7 : 15
  • D 9 : 14
Answer: Option B
Q13
In a ratio which is equal to 0.06 of another number is 12, then consequent is :
  • A 9
  • B 16
  • C 20
  • D 24
Answer: Option B
Q14
If 0.4 of a number is equal to 0.06 of another number, then the ratio o the number is :
  • A 2 : 3
  • B 3 : 4
  • C 3 : 20
  • D 20 : 3
Answer: Option C
Q15
A fraction which bear the same rartio to 1/27 that 3/11 does to 5/9, is :
  • A 1/55
  • B 55
  • C 1/11
  • D 3/11
Answer: Option A
Q16
if a + b : b + c : c + a = 6 : 7 : 8 and a + b + c = 14, then the value of c is:
  • A 6
  • B 7
  • C 8
  • D 14
Answer: Option A
Q17
If a/3=b/4=c/7, then a+b+c/c is equal to :
  • A 7
  • B 2
  • C 1/2
  • D 1/7
Answer: Option B
Q18
If x/5 = y/8, then (x + 5) : ( y + 8) is equal to
  • A 7
  • B 2
  • C 1/2
  • D 1/7
Answer: Option B
Q19
If x/5 = y/8, then (x + 5)  (y + 8) is equal to :
  • A 3 ; 5
  • B 13 : 8
  • C 8 : 5
  • D 5 : 8
Answer: Option D
Q20
If x ; y = 6 : 5, then (5x + 3y) : (5x - 3y) is equal to :
  • A 2 : 1
  • B 3 : 1
  • C 5 : 3
  • D 5 : 2
Answer: Option B
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