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Quantitative Aptitude

RATIO AND PROPORTION MCQs

Ratio & Proportion, Ratio, Proportion

Total Questions : 895 | Page 13 of 90 pages
Question 121. A box has 1 rupee, 50 paise and 25 paise coins in the ratio 3 : 2 : 5 worth Rs. 252. The number of 25 paise coins in the box is = ?
  1.    96
  2.    144
  3.    240
  4.    48
 Discuss Question
Answer: Option C. -> 240
Question 122. The falling height of an object is proportional to the square of the time. One object falls 64 cm in 2 sec then in 6 sec from how much height the object will fall ?
  1.    192 cm
  2.    276 cm
  3.    436 cm
  4.    576 cm
 Discuss Question
Answer: Option D. -> 576 cm
Question 123. Y varies directly as (x + 3) and y = 8 when x = 1. What is the value of y when x = 2 ?
  1.    6
  2.    10
  3.    12
  4.    16
 Discuss Question
Answer: Option B. -> 10
Question 124. Suppose y varies as the sum of two quantities of which one varies directly as x and the other inversely as x. If y = 6 when x = 4 and y = $${\text{3}}\frac{{\text{1}}}{{\text{3}}}$$ when x = 3, then the relation between x and y is -
  1.    $$y = 2x - \frac{8}{x}$$
  2.    $$y = x + \frac{4}{x}$$
  3.    $$y = 2x + \frac{4}{x}$$
  4.    $$y = 2x + \frac{8}{x}$$
 Discuss Question
Answer: Option A. -> $$y = 2x - \frac{8}{x}$$
Question 125. If 4 years ago the ratio between the ages of P and Q was 5 : 6 and the sum of their ages at present is 52, what is the ratio of their present ages ?
  1.    5 : 6
  2.    6 : 7
  3.    7 : 8
  4.    4 : 5
 Discuss Question
Answer: Option B. -> 6 : 7
Question 126. Ratio of A's age to B's age is 4 : 3. 'A' will be 26 years old after 6 years. The age of B now is = ?
  1.    11 years
  2.    21 years
  3.    22 years
  4.    15 years
 Discuss Question
Answer: Option D. -> 15 years
Question 127. Two numbers are in the ratio 3 : 5. If 6 is added to both of them, the ratio becomes 2 : 3. The numbers are = ?
  1.    21 and 35
  2.    30 and 50
  3.    24 and 40
  4.    18 and 30
 Discuss Question
Answer: Option D. -> 18 and 30
Question 128. The boys and girls in a college are in the ratio 3 : 2. If 20% of the boys and 25% of the girls are adults, the percentage of students who are not adults is -
  1.    67.5%
  2.    58%
  3.    78%
  4.    82.5%
 Discuss Question
Answer: Option C. -> 78%
Question 129. The cost of a table and a chair are in the ratio of 5 : 7. If the cost of chair and table is increased by 20% and 10% respectively, then what will be the new ratio?
  1.    16 : 17
  2.    55 : 84
  3.    60 : 77
  4.    Data inadequate
  5.    None of these
 Discuss Question
Answer: Option B. -> 55 : 84
Question 130. A mixture contains spirit and water in the ratio of 3 : 2. If it contains 3 litres more spirit than water, the quantity of spirit in the mixture is = ?
  1.    12 litres
  2.    10 litres
  3.    9 litres
  4.    8 litres
 Discuss Question
Answer: Option C. -> 9 litres

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