Quantitative Aptitude

Fractions and Percentages

344 Questions

Fractions and percentages form the foundation of quantitative aptitude, requiring the conversion of values between different formats. Questions cover percentage increases, fractional equivalents, and basic arithmetic manipulations. These concepts are heavily tested in SSC, banking, and railway competitive exams.

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Fractions and Percentages Questions

Multiple choice

63% of 25/7 is:

  1. 2.25

  2. 2.4

  3. 2.5

  4. 2.75

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

63% of 25/7 = 63/100 * 25/7 = 4/9 = 2.25

Multiple choice

The percentage of plasma in the blood of human beings is about

  1. 45%

  2. 50%

  3. 55%

  4. 60%
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Blood is composed of plasma and formed elements (cells). Plasma makes up approximately 55 percent of the total blood volume, while the remaining 45 percent consists of red blood cells, white blood cells, and platelets.

Multiple choice

If 10 % of M = 20 % of N then M : N =?

  1. 10 : 1

  2. 5 : 1

  3. 1 : 2

  4. 2 : 1

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Given 0.10 * M = 0.20 * N, dividing both sides by 0.10 gives M = 2 * N. Therefore, M/N = 2/1, or M:N = 2:1.

Multiple choice

Percentage of carbon in steel ranges from ……………..

  1. 0.1 to 1.5.

  2. 2.5 to 4.5

  3. 4.1 to 5.5

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Steel is an alloy of iron and carbon. The carbon content in steel typically ranges from 0.02% to about 2.1% by weight, making 0.1 to 1.5 the most accurate range provided.