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Aptitude - Ratios Online Quiz

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.

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

Answer : D

Explanation

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

Q 2 - Rs. 960 was divided among three sons Qavi, Shafi and Rafi. If each of them had received Rs 45 less, their shares would have been in the ratio of 3:5:7. What was the amount received by Qavi?

Answer : D

Explanation

Total =Rs.960
If each of them receives Rs.45 less then 960-(45*3) =825
Ratio being 3:5:7
=>3x+5x+7x=825
=>x=55
Qavi's amount = (3x) +45=(3*55)+45=Rs.210

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 - 1/x :1/y :1/z =2:3:5, then x:y:z=?

Answer : B

Explanation

Let 1/x = 2k , 1/y = 3k and 1/z = 5k
At that point x = 1/2k, y =1/3k, z = 1/5k 
∴   x:y:z = 1/2k : 1/3k: 1/5k
∴  x:y:z = 15:10:6

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

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 ?

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

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 - if the wage of A is 10% more than that of B and the wage of B is 20 % not as much as that of C, than the pay of A,B, C are in the proportion.

Answer : B

Explanation

Let C income be Rs 100. Then, B income=Rs 80.
A income=(110% of Rs 80)=Rs(110/100*80)=Rs 88.
∴A:B:C=88:80:100=22:20:25.

Q 9 - Income of A ,B and C are in the proportion 7:9:12 and their consumption are in the proportion 8:9:15 . On the off chance that A sparing is 1/4 of his wage, then the proportion of sparing of A,B and C is:

Answer : A

Explanation

Let the incomes of A, B and C be 7x, 9x and 12 x and their expenditures be Rs 8y,Rs 9y and Rs 15y respectively. Then their savings are Rs(7x -8y), Rs(9x-9y) and Rs (12x-15y).
∴7x-8y=1/4*7x
=>28x-32y=7x
=>21x=32y.
Ratio of saving=(7x-8y):(9x-9y):(12x-15y)
 =  (7*32/21y-8y):(9*32/21y-9y):(12*32/21y-15y)
 = (32y-24y/3):(96y-63y/7):(128y-105y/7)
 = 8y/3:33y/7:23y/7=56:99:69.

Q 10 - Rs 3068 are circulated among A,B and C such that on diminishing Their shares by Rs 10,Rs 14 and Rs 20 individually, the parity cash would be isolated among then in the proportion 5:6:7. at that point ,B offer is:

Answer : B

Explanation

Money in the ration 5:6:7 is Rs (3068 -44) =Rs 3024.
∴B share =Rs{(3024*6/18)+14}=Rs(1008+14) =1022

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