Aptitude - Ratios Online Quiz


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Following quiz provides Multiple Choice Questions (MCQs) related to Ratios. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 1 - The ratio of money with Raju and Babu is 9:19 and that with Babu and Shyam is 9:19.if Raju has Rs.567,Babu has

A - 2527

B - 2525

C - 2523

D - 2521

Answer : A

Explanation

Raju:Babu = 9:19 = 81:171
Babu:Shyam = 9:19 = 171:361
=> Raju:Shaym = 81:361
=> 81:361 = 567:x
=>x = 2527

Q 2 - Two numbers are respectively 80% and 60% more than a third number. What is the ratio between two numbers?

A - 7:8

B - 8:9

C - 9:8

D - 4:3

Answer : C

Explanation

Let the third number be x
=> The first and second number becomes 1.8x and 1.6x
Their ratio will be 1.8x/1.6x=1.8/1.6=9/8 = 9:8

Q 3 - If A:B =1/2:3/8 , B:C =1/3:5/9 and C:D =5/6:3/4 then , A:B:C:D=?

A - 3:2:4:5

B - 6:8:9:10

C - 8:6:10:9

D - 2:3:4:5

Answer : C

Explanation

A:B = 1/2 : 3/8 =4 :3 ,
B:C = 1/3 :5/9 = 3:5 
and C:D = 5/6 : 3/4 = 10 :9 
A:B = 4:3 , B:C = 3 :5
, C:D = 10/2 :9/2 = 5 :9/2 
A:B:C:D = 4:3:5:9/2 = 8 :6: 10 :9

Q 4 - If x/5=y/8,then (x+5):(y+8)=?

A - 3:5

B - 3:8

C - 8:5

D - 5:8

Answer : D

Explanation

Let x/5=y/8 = k ,then x = 5k and y = 8k
&therw4; x+5/y+8 = 5k+5 / 8k +8  = 5(k+1)/ 8(k+1) = 5/8
=> (x+5) : (y+8 ) = 5:8

Q 5 - The proportion of young men and young ladies in a school is 3:2 . at the point when 6 more young ladies join , this proportion gets to be 6:5 . What are number of young men there in the school?

A - 24

B - 30

C - 42

D - 36

Answer : D

Explanation

Let the quantity of young men and young ladies be 3x and 2x individually.
At that point ,3x/(2x+6)=6/5 ?15x=12x+36?3x=36?x=12.
Number of boys=(3*12)=36.

Q 6 - In an extent which is proportionate to 5:8 , if the harbinger is 40, then the subsequent is :

A - 25

B - 64

C - 48

D - 129

Answer : B

Explanation

Let the consequent be X. Then,
 5/8 =40/x
=>  5x=8*40
=>  x=64
∴ Consequent is 64.

Q 7 - Two entire numbers whose entirety is 64, cannot be in the proportion

A - 5:3

B - 7:1

C - 3:4

D - 9:7

Answer : C

Explanation

For dividing 64 in to two whole numbers, the sum of the terms of the ratio must be a factor of 64.
So, they cannot be in the ratio 3:4

Q 8 - The whole of three square of three no. which are in the proportion 2:3:4 is 725. What are three numbers?

A - 10 ,15, 20

B - 14, 21, 28

C - 20 ,15, 30

D - 20, 30, 40

Answer : A

Explanation

Let the numbers be 2x, 3x and 4x. Then,
      4x2 +9x2 +16x2 = 725  
=> 29x2  =725 
 x2 = 25 
=> x =5
      ∴ The numbers are 10, 15, 20 .

Q 9 - Rs. 53 is isolated among A, B and C in a manner that A gets rs.7 more than what B gets and B gets rs. 8 more than what C gets. The proportion of their offer is:

A - 16:9:18

B - 25:18:10

C - 18:25:10

D - 15:8:30

Answer : B

Explanation

Let C=x Then, B= (x+8) and A =(x+15)
∴ x+15+x+8+x =53 
=>3x =30  
=> x=10
∴ A:B:C=25:18:10.

Q 10 - Three equivalent glasses are loaded with blend of soul and water. The proportion of sprit and water is given underneath:- first glass = 3:4 , second glass =4:5 ,third glass =5:6 The substance of three glasses are purged into a solitary vessel. What is the proportion of spirit to water in the blend now?

A - 820:1149

B - 920:1159

C - 1010 :1122

D - 1120 :1134

Answer : B

Explanation

Let 1 liter of each is taken. Then,
Spirit=(3/7+4/9+5/11)= (297+308 +315)/693=920/693.
Water =(4/7+5/9+6/11)=(396+385+378)/693=1159/693.
Required ratio =920/693:1159/693=920:1159.

aptitude_ratios.htm

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