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 - 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 15% of A =20% of B , then A:B =?

A - 3:4

B - 4:3

C - 17:16

D - 16:17

Answer : B

Explanation

15/100 a = 20/100 b
=> 15 A = 20 B
=>A/B = 20/15 = 4/3
Thus A:B =4 :3

Answer : B

Explanation

5x2- 13xy +6y2 = 0
=> 5x2-10xy-3xy+6y2=0
=> 5x(x-2y) - 3y(x-2y)=0 
=> (x-2y) (5x-3y)=0
=>  x-2y=0 or 5x-3y =0 or 5x=3y
=>  (x:y)= (2:1) or (x:y)= (3:5)

Q 5 - If 20 % of (p +q )=50 % of (p-q ), then p:q =?

A - 5:7

B - 7:5

C - 7:3

D - 7:8

Answer : C

Explanation

20/100* (P+Q) = 50/100* (P-Q)
=> 20 * (P+Q)=50 *(P-Q)
=> 20P +20Q = 50P-50Q
=> 30P=70Q 
=> P/Q=70/30=7/3
=> P:Q = 7:3.

Q 6 - The no's proportion of understudy concentrating on in school A,B and C is 5:6:8 . In the event that the no. of understudy in each of the schools is expanded by 30%, 25% and 25% individually, what will be the new proportion of the understudy in the school A, B and C?

A - 14:15:20

B - 13:15:20

C - 15:17:19

D - 16:17:19

Answer : B

Explanation

New strength = (130% of 5x), (125% of 6x) and (125% of 8x)
= (130/100*5x), (125/100*6x),(125/100*8x)
New ratio=650x/100:750x/100:1000x/100=65:75:100=13:15:20.

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 proportion of first and worthless train passages between two stations is 3:1 and that of the no. of traveler going between two these by first and inferior 1:50 . in the event that on a specific day rs.1325 be gathered from the travelers going between these stations, then the sum gathered from useless travelers is:

A - 1250

B - 1000

C - 850

D - 750

Answer : A

Explanation

Ratio of the amounts collected form 1stand 2nd  class fares
    =(3*1:1*50)=3:50.
Amount collected from 2nd   class passengers=Rs (1325*50/53) = Rs 1250.

Q 9 - Rs. 600 are partitioned among A, B and C such that Rs. 40 more than 2/fifth of An offer , Rs. 20 more than 2/7 of B offer and Rs. 10 all the more then 9/17 of C offer may all be equivalent . What is A's offer?

A - 280

B - 150

C - 170

D - 200

Answer : B

Explanation

(2/5)A +40 = ( 2/7)B +20 + 9/17 C+10 = k.
Then, A =5/2 (k-40), B= 7/2(k-20) and C= 17/9 (k-10)
A+B+C =600 =>5/2 (k-40) +7/2(k-20) + 17/9 (k-10) = 600
=> 45(k-40) +63(k-20)+34(k-10)= 10800
=> 142k- (45*40+63*20+34*10) =10800
=> 142k- (10800+3400) = 14200 
=>k=100.
∴ A= 5/2(100-40)= (5/2*60) =150

Q 10 - Two vessels A and B contain drain and water blended in the proportion 5:3 and 2:3. At the point when these blends are blended to frame another blend containing half drain and half water, they must be taken in the proportion

A - 2:5

B - 3:5

C - 4:5

D - 7:3

Answer : C

Explanation

Let the required ratio be x:1,
Milk in x liters of A=(x*5/8) liters=5x/8 liters,Water=3x/8 liters.
Milk in 1 litre of B=(1*2/5) litre=2/5 litre, Water =3/5 liters.
∴ (5x/8+2/5) / (3x/8+3/5) = 1/1 
=>(5x/8+2/5)=(3x/8+3/5)
=> 2x/8=1/5 
=>x=4/5.
Required ratio= 4/5:1=4:5.

aptitude_ratios.htm

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