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Quantitative Aptitude

RATIO AND PROPORTION MCQs

Ratio & Proportion, Ratio, Proportion

Total Questions : 895 | Page 17 of 90 pages
Question 161. If $$\frac{{{\text{a}} + {\text{b}}}}{{\text{c}}} = \frac{{{\text{b}} + {\text{c}}}}{{\text{a}}} = \frac{{{\text{c}} + {\text{a}}}}{{\text{b}}} = {\text{k}},$$       then k is equal to -
  1.    0
  2.    1
  3.    2
  4.    a + b + c
 Discuss Question
Answer: Option C. -> 2
Question 162. If x : y = 3 : 4, then the value of (4x - y) : (2x + 3y) is = ?
  1.    4 : 9
  2.    8 : 9
  3.    4 : 3
  4.    8 : 3
 Discuss Question
Answer: Option A. -> 4 : 9
Question 163. Three numbers are in the ratio 3 : 4 : 5. The sum of the largest and the smallest equals to the sum of the second number and 52. The smallest number is = ?
  1.    20
  2.    27
  3.    39
  4.    52
 Discuss Question
Answer: Option C. -> 39
Question 164. A container contains two liquids A and B in the ratio 7 : 5. When 9 litres of mixture are drawn off and the container is filled with B, the ratio of A and B becomes 1 : 1. How many litres of liquid A was in the container initially = ?
  1.    26
  2.    $$16\frac{1}{2}$$
  3.    $$36\frac{3}{4}$$
  4.    $$26\frac{3}{4}$$
 Discuss Question
Answer: Option C. -> $$36\frac{3}{4}$$
Question 165. If a : b = 2 : 3 and b : c = 4 : 5, then (a + b) : (b + c) is equal to-
  1.    6 : 8
  2.    8 : 6
  3.    20 : 27
  4.    27 : 20
 Discuss Question
Answer: Option C. -> 20 : 27
Question 166. The fourth proportion to 5, 8, 15 is-
  1.    18
  2.    20
  3.    21
  4.    24
 Discuss Question
Answer: Option D. -> 24
Question 167. The fourth proportional to 0.12, 0.21 and 8 is-
  1.    8.9
  2.    14
  3.    17
  4.    56
 Discuss Question
Answer: Option B. -> 14
Question 168. In a mixture of 25 litres the ratio of acid to water is 4 : 1. Another 3 litres of water of water is added to the mixture. The ratio of acid to water in the new mixture is = ?
  1.    5 : 2
  2.    2 : 5
  3.    3 : 5
  4.    5 : 3
 Discuss Question
Answer: Option A. -> 5 : 2
Question 169. The ratio of weekly income of A and B is 9 : 7 and the the ratio of their expenditure is 4 : 3. If each saves Rs. 200 per week, then the sum of their weekly income is = ?
  1.    Rs. 3600
  2.    Rs. 3200
  3.    Rs. 4800
  4.    Rs. 5600
 Discuss Question
Answer: Option B. -> Rs. 3200
Question 170. 94 is divided into two parts in such a way that fifth part of the first and the eighth part of the second are in the ratio 3 : 4. The first part is = ?
  1.    30
  2.    36
  3.    40
  4.    28
 Discuss Question
Answer: Option A. -> 30

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