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 between Hyder's and Siddiq's age at present is 3:5.Hyder is 8 years younger then Siddiq. The ratio of Hyder's age to Siddiq's age after 8 years will be:

A - 4:9

B - 5:6

C - 5:7

D - 3:5

Answer : C

Explanation

Let their ages be 3x and 5x years.
5x-3x=8 or x=4.
Hyder's age = 3x =12 and Siddiq's age = 5x =20.
After 8 years Hyder's age = 12+8 = 20
After 8 years Siddiq's age = 20+8 =28
Ratio of their ages 20:28 = 5:7

Q 2 - If 18: x=x: 18, then x is equal to:

A - 18

B - 324

C - 9

D - 4.24

Answer : A

Explanation

18: x=x: 18
=>18/x=x/18=>x=18

Q 3 - If A=(1/3)B and B=(1/2)C, then A:B:C =?

A - 1:3:6

B - 2:3:6

C - 3:2:6

D - 3:1:2

Answer : A

Explanation

A/B = 1/3 and B/C =1/2
∴ A :B = 1 :3 and B :C = 1:2 = 3:6
∴ A :B :C = 1 :3:6

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 - On the off chance that a:b =c:d =e: f =1:2 , then (3a+5c+7e) : (3b +5d +7f ) = ?

A - 1:2

B - 1:4

C - 2:1

D - 8:7

Answer : A

Explanation

a/b=c/d=e/f=1/2?a= b/2,c=d/2 and e=f/2.
  ∴ (3a+5c+7e)/(3b+5d+7f) =
(3b/2+5d/2+7f/2)/(3b+5d+7f) 
= 1/2(3b+5d+7f)/3b+5d+7f) = 1/2.
=>  (3a+5c+7e):(3b+5d+7f)= 1:2.

Q 6 - If 32 understudies In a class are females and the proportion of females to guys understudy is 16:9 , then what % of the class is females ?

A - 32%

B - 36%

C - 56.25%

D - 64%

Answer : D

Explanation

Let the females be16x and males 9x .
Then, 16 x = 32  
=> x=2
 So, there are 32 females and 18 males in the class. 
 Percentage of females = {32/50*100)% = 64 %

Q 7 - 94 is isolated into two sections in a manner that fifth piece of the first Furthermore, eighth piece of the second are in the proportion 3:4.the first part is:

A - 27

B - 30

C - 36

D - 48

Answer : B

Explanation

(1/5)a :(1/8)b= 3:4
=> (1/5)a/(1/8)b=3/4
=> 8a/5b=3/4 
=> a/b={3/4 *5/8}= 15/32
=> First part ={94*15/47) =30.

Q 8 - Three no. are in the proportion 3:4:5. The total of the biggest and the littlest measures up to the third's entirety and 52. The littlest no. is?

A - 20

B - 27

C - 39

D - 52

Answer : C

Explanation

Let the numbers be 3x, 4x and 5x.
(5x+3x) = 4x+52  
=>  4x =52 
=>  x=13
  Smallest no. = (3*13) = 39

Q 9 - Rs. 1050 is partitioned among p, q and r in a manner that the offer of p is 2/5 of the consolidated offer of q and r. Therefore p gets:

A - 200

B - 300

C - 320

D - 420

Answer : B

Explanation

Given: P=2/5 (Q+R) 
=> P :( Q+R)= 2:5
∴ P share =(1050*2/7)= 300.

Q 10 - A blend contains drain and water in the proportion 5:1. On including 5 liters of water, the proportion of milk to water gets to be 5:2. The amount of milk in the first blend is:

A - 16 liters

B - 22.75 liters

C - 25 liters

D - 32.5 liters

Answer : C

Explanation

In the given mixture, Let milk = 5x liter and water =x liters.
Then, 5x/x+5= 5/2 
=> 10x= 5x+25 
=>5x =25 
=>x=5
∴ milk in original mixture= (5*5) =25 liters 

aptitude_ratios.htm

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