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Quantitative Aptitude

PERCENTAGE MCQs

Percentages

Total Questions : 2296 | Page 18 of 230 pages
Question 171. Two numbers A and B are such that the sum of 5% of A and 4% of B is two-thirds of the sum of 6% of A and 8% of B. Find the ratio of A : B ?
  1.    2 : 3
  2.    1 : 1
  3.    3 : 4
  4.    4 : 3
 Discuss Question
Answer: Option D. -> 4 : 3
Question 172. In a college election between two candidates, one candidate got 55% of the total valid votes. 15% of the votes were invalid. If the total votes were 15200, what is the number of valid votes the other candidate got ?
  1.    5814
  2.    6840
  3.    7106
  4.    8360
  5.    None of these
 Discuss Question
Answer: Option A. -> 5814
Question 173. If x% of y is equal to z, what percent of z is x ?
  1.    $$\frac{{{y^2}}}{{100}}$$ %
  2.    $$\frac{y}{{{{100}^2}}}$$ %
  3.    $$\frac{{100}}{y}$$ %
  4.    $$\frac{{{{100}^2}}}{y}$$ %
 Discuss Question
Answer: Option D. -> $$\frac{{{{100}^2}}}{y}$$ %
Question 174. A part of Rs. 9600 is invested at a 5% annual return, while the remainder is invested at a 3% annual return. If the annual income from both portions is the same, what is the total income from the two investments ?
  1.    Rs. 320
  2.    Rs. 380
  3.    Rs. 410
  4.    Rs. 440
  5.    None of these
 Discuss Question
Answer: Option E. -> None of these
Question 175. Of the 50 researchers in a work group, 40% will be assigned to Team A and the remaining 60% to Team B. However, 70% of the researchers prefer team A and 30% prefer Team B. What is the least possible number of researchers who will not be assigned to the team they prefer ?
  1.    15
  2.    20
  3.    30
  4.    35
 Discuss Question
Answer: Option A. -> 15
Question 176. When water is changed into ice, its volume increases by 9%. If ice change into water, the percentage decrease in volume is :
  1.    $$8\frac{{28}}{{109}}\% $$
  2.    9%
  3.    10%
  4.    18%
 Discuss Question
Answer: Option A. -> $$8\frac{{28}}{{109}}\% $$
Question 177. A tree increases annually by $$\frac{1}{8}$$ of its height. By how much will it increase after $$2\frac{1}{2}$$ years if it stands today 8 m high ?
  1.    10.75 m
  2.    11.85 m
  3.    12.25 m
  4.    15.60 m
 Discuss Question
Answer: Option A. -> 10.75 m
Question 178. How many litres of a 30% alcohol solution should be added to 40 litres of a 60% alcohol solution to prepare a 50% solution ?
  1.    20
  2.    24
  3.    30
  4.    32
 Discuss Question
Answer: Option A. -> 20
Question 179. Solve [180% of (?)] ÷ 2 = 504
  1.    400
  2.    480
  3.    560
  4.    600
 Discuss Question
Answer: Option C. -> 560
Question 180. The marked price of an article is Rs. 2400. The shopkeeper gives successive discounts of x% and 15% to the customer. If the customer pays Rs. 1876.80 for the article, find the value of x :
  1.    9%
  2.    8%
  3.    12%
  4.    11%
 Discuss Question
Answer: Option B. -> 8%

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