Ratio and Proportion Aptitude Questions with Solutions with PDF at Smartkeeda | Ratio & Proportion Quiz 3 at Smartkeeda

Directions: Study the following questions carefully and choose the right answer:
1
The ratio of zinc and copper in a brass pieces is 13 : 7. How much zinc will be there in 100 kg of such a piece?
» Explain it
D
Amount of zinc =  ( 100 ×  13 ) kg = 65kg.
20

Hence, option D is correct.
2
The ratio of number of men and women in a factory of 720 workers is 7 : 5. How many more women should be joined to make the ratio 1 : 1? 
» Explain it
C
Number of men =  ( 720 ×  7 )  = 420.
12

Number of women = (720 - 420) = 300.

∴   Number of women to be joined = (420 - 300) = 120.

Hence, option C is correct.

3
What is the ratio whose terms differ by 40 and the measure of which is 2/7 ?
» Explain it
B
Traditional Method:

Let the ratio be x : (x + 40).

Then,   x  =  2   ⇔ 7x = 2x + 80  ⇔ x =16.
(x + 40) 7

∴   Required ratio is 16 : 56.
_______________________________________________________________________________________________________

Smarter Approach1;

Pick one option and check whether it satisfies the given condition or not. The one that satisfies will be the answer.

Option A:  12  
56

gets eliminated because the difference between the terms is not 40.

Option B:  16  
56

is the correct answer because the difference between the terms is 40 and

its measure is also  2 .
7
_______________________________________________________________________________________________________

Smarter Approach 2:

Step 1:  Take the difference between the terms of given ratio 2/7.

                                                     7 ~ 2 = 5

Step 2: Divide the actual given difference between the term by the resultant we got in step 1.

  40  = 8
5

Step 3: Take this quotient as a multiple and multiply it into the numerator and the denominator part of the given ratio to get the actual ratio.

  2 × 8  =  16
7 × 8 56

Hence, option B is correct.

4
Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 8% of B. Find the ratio of A : B is
» Explain it
A
From the equation, we get

5% of A + 4% of B =  2  (6% of A + 8% of B)
3

⇒ 15% of A + 12% of B = 12% of A + 16% of B

⇒ [15 – 12] % of A = [16 – 12] % of B

⇒ 3 % of A = 4% of B

⇒  A  =  4
B 3

Therefore, A : B = 4 : 3.

Hence, option A is correct.

5
In a certain school, the ratio of boys to girls is 7 : 5. If there are 2400 students in the school, then how many girls are there?
» Explain it
D
Let the number of boys and girls are 7x and 5x, respectively.

Given, total number of students = 2400

⇒ 7x + 5x = 2400  ⇒  12x = 2400 

   x = 200

∴    Required number of girls = 5x  =  5 × 200 = 1000.

Hence, option D is correct.

Ratio and Proportion Questions Quiz for Bank, CET, LIC Exams

Ratio and Proportion concept is one of the most important parts of word problems, in each exam bank exams around 1 to 2 questions has been seen.  If you are aware about tricks and short cuts of ratio and proportion you can easily solve world problems within a minute.

Ratio, Proportion and Variation form an interesting chapter. The basic fundamentals of this chapter are extensively used in solving many questions in chapters like time and work, time and distance. You are likely to find the quite a few questions in the actual exams, based on these concepts

Here first we will discuss about, “what is ratio”

The comparison between two quantities of the same kind of units. Two of different kinds can’t be compared. Thus, there is no relation between rupees and 20 men. The ratio of a and b is usually written as a : b or a/b.

Ratio and Proportion questions asked in SBI Clerk Pre, IBPS Clerk Pre, IBPS RRB Pre, IBPS RRB Office Assistant Pre, IBPS RRB Scale 1 Pre, IBPS RRB Office Assistant Mains, IBPS RRB Scale 1 Mains, IBPS PO Pre, IBPS SO Pre, IBPS PO, SBI PO Pre, SBI SO Pre, SBI PO, LIC, NIACL, OICAL, CLAT, MAT, NIFT, CTET etc.

In this above quiz you will practice of 10 Ratio and Proportion questions with detailed solution, you will also get to know about how to solve ration and proportion questions fast by using tricks and shortcuts at free of cost.

You can also practice how to solve time and work questions with the help of ration and proportion concept. Here at Smartkeeda you will practice unlimited problems of ratio and proportion with quality solution.

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