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 - Three friends divide Rs.481among themselves in the ratio 1/3:1/4:1/5. The share of third friend is:

A - 240.5

B - 121

C - 210

D - 156

Answer : D

Explanation

Ratio = 1/3:1/4:1/5 = 10:15:12
Share of third friend = 12*12/37 = Rs.156

Q 2 - The speed of three trains is in the ratio 3:5:7. The ratio between the time taken by these trains to travel the same distance is

A - 35:21:15

B - 7:5:3

C - 35:15:13

D - 15:21:35

Answer : A

Explanation

Speeds are in the ratio 3:5:7
Ratio of time taken will be  1/3:1/5:1/7
=> 35/105:21/105:15/105 =35:21:15

Q 3 - If A:B =5:7 and B:C = 6:11, then A:B:C =?

A - 55:77:66

B - 30:42:77

C - 35:49:42

D - None of the above.

Answer : B

Explanation

A:B = 5:7 = 30:42
B:C = 6:11 = 42:77
Thus A: B: C = 30:42:77

Q 4 - If 7:x ::17.5 :22.5 , then x=?

A - 5.5

B - 7.5

C - 6

D - 9

Answer : D

Explanation

X * 17.5 =7*22.5 
=>  X= 7*22.5/17.5 
= 7*225/175 =9.

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 - What must be added to each term of the extent 7:13 so that the extent gets the chance to be 2:3 ?

A - 1

B - 2

C - 4

D - 5

Answer : D

Explanation

Let the number to be added be X. Then,
7+x/13+x= 2/3  
=> 3(7+X)=2(13+x)
 => X= (26-21)= 5
∴ number to be added = 5.

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. 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 - Rs 1300 are separated among A,B,C and D in a manner that: A share / B share = B share / C share =C share/ D share = 2/3, What is A share?

A - 320

B - 240

C - 160

D - 140

Answer : C

Explanation

A:B=2:3,B:C=2:3=3/2*2:3/2*3:9/2.
C:D=2:3=2*9/4:3*9/4=9/2:27/4.
∴ A:B:C:D=2:3:9/2:27/4=8:12:18:27.
A share =Rs(1300*8/65)=Rs160.

aptitude_ratios.htm

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