# 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 - 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:

### 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

### Answer : A

**Explanation**

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

### 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

### 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 ) = ?

### 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 ?

### 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:

### 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?

### 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:

### 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:

### 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