Mathematics · Quantitative Aptitude
Ratios and Proportions
302 Questions
Ratios and proportions deal with comparing two or more quantities and finding their relationships. The questions involve calculating compound ratios, duplicate ratios, and solving proportional equations. This topic is a crucial part of the mathematics and quantitative aptitude sections in competitive exams.
compound ratiosduplicate ratiosproportion equationssimple ratio calculationscombining multiple ratios
Ratios and Proportions Questions
B
Correct answer
Explanation
The Indian National Flag has an official ratio of 2:3 between its width (hoist) and length (fly). This means the flag's length is 1.5 times its width. The flag was designed by Pingali Venkayya and adopted in its current form on July 22, 1947.
-
2:5
-
3:5
-
4:5
-
None of these
C
Correct answer
Explanation
Let the third number be x. First number = 1.2x = 6x/5, second number = 1.5x = 3x/2. Ratio = (6x/5):(3x/2) = 12:15 = 4:5. Option C is correct.
B
Correct answer
Explanation
The official ratio of India's National Flag is 2:3 (width:length). This is specified in the Flag Code of India. The flag was designed by Pingali Venkayya.
-
12,24,36
-
10,20,30
-
5,10,15
-
4,8,12
A
Correct answer
Explanation
HCF = 12 means 12 is the largest number dividing all three. In ratio 1:2:3, the smallest number must equal the HCF, so numbers are 12, 24, 36.
A
Correct answer
Explanation
One hour = 60 minutes. The ratio of 12 minutes to 60 minutes is 12:60, which simplifies to 1:5 by dividing both terms by 12. Option A is correct.
-
percentage, rate, proportion.
-
percentage only
-
rate and proportion
-
rate only
A
Correct answer
Explanation
Right answer because we can express ratio in percentage, rate ,and proportion only. So it is the right answer.
-
One variable
-
Two or more variables
-
No need of variables
-
Less then two variables
B
Correct answer
Explanation
Right answer because we can find any ratio with the help of two or more variables. So it is the right answer.
-
1 : 600
-
1 : 6000
-
1 : 60000
-
1 : 200
A
Correct answer
Explanation
The ratio of WBCs to RBCs is about 1 : 600 in man.
A
Correct answer
Explanation
Let the two positive numbers be 5x and 8x, respectively.
8x - 5x = 15
3x = 15
x = 5
So, the smaller number = 5 * 5 = 25.
C
Correct answer
Explanation
The official ratio of the Indian National Flag's width to its length is 2:3. This means if the flag is 2 units wide (in the shortest dimension), it must be 3 units long (in the longest dimension). This ratio is specified in the Flag Code of India. The other ratios (2:4, 3:4, 3:5) do not match the official specification.
A
Correct answer
Explanation
3 : 2
The diameter of this Chakra is three-fourths of the height of the white strip. The ratio of the width of the flag to its length is 2:3. The flag is also the Indian Army's war flag, hoisted daily on military installations
B
Correct answer
Explanation
The ratio of width to length of the National Flag is 2:3.
-
ratio = boys/girls;
-
ratio = girls/boys;
-
ratio = (float) girls/boys;
-
ratio = (float) boys/girls;
-
ratio = float boys/girls;
D
Correct answer
Explanation
Cast operator is required to convert the boys/girls calculation in decimal precision. Cast operator can be used to explicitly convert the value of an expression to a different data type.
-
Hit ratio = number of hits/number of misses
-
Hit ratio = number of misses/number of hits
-
Hit ratio = (1-number of hits)/number of misses
-
Hit ratio = (1 - number of hits)/(number of misses + number of hits)
-
Hit ratio = number of hits/(number of misses + number of hits)
E
Correct answer
Explanation
This is the correct answer because the numerator should be ''number of hits'', and denominator should be ''number of misses + number of hits''.
-
GM
-
AM
-
AM and GM
-
AM and HM
-
GM and HM
E
Correct answer
Explanation
GM and HM are ratio averages.