Missing DI Practice Set for IBPS PO: Part 7

(Direction 1 -5) Following is a tabulation of the number of books published by six different publishers on different categories of books. Read the table carefully and answer the questions.

Books Category
Science & Tech
Literature
Competitive Exam

Question 1.

Approximately what is the average number of science & tech book published by all the publishers?

A.320
B. 330
C. 335
D. 338
E. None of these

Question 2. 

What is the ratio between number of magazines published by publisher F to the number of story books published by publisher B, If number of competitive exam books published by E is 7 times more than book published by D?

A. 90: 35
B. 90:37
C. 35:90
D. 37:90
E. None of these

Question 3. 

Total number of books published by A and C is what percentage more or less than total number of comics and competitive exam books published?

A. 35%
B. 34%
C. 24%
D. 20%
E. None of these

Question 4.

The total number of story books published by C forms what percentage of the total number of comics books published?

A. 10 %
B. 14 %
C.15%
D. 18%
E. None of these

Question 5. 

If the total number of story books and magazines are equal then what will be the difference between story books published by B and number of Literature books published by E and F together?

A. 60
B. 70
C. 80
D. 90
E. None of these

Answers:

1. Option D

→ Science and tech books published by A = 2964 – 2584 = 380
→  Science and tech books published by E = 2255 – 1965 = 290
→  Avg. number of science & tech books published by all publishers =(380 + 492+ 326+ 200 + 290 + 340)/6 = 338 (ans)

2. Option B

→  Number of magazines published by F =
→  2750 – [620+340+330+360+650] =450
→  Number of magazines published by B =
→  1955 – [545+312+210+110+ 450] = 328
→  Given: no. of competitive exam books by E = 7 * no. of competitive books by D
→  700 = 7 * no. of cometitive books by D
→  No. of competitive books by D= 100
→  No. of competitive exam books by D = 100
→  No. of competitive exam books by B = 3495- [975+350+100+700+650] = 720
→  No. of story books published by B = 2765- [ 560+492+328+480+720] = 185
→  Ratio = Magazine by F : Magazine by  = 450 : 185 = 90: 37

3. Option C

→  Total no. of books published by A & C = 2964 + 2038 = 5002
→  Total no. of comics & competitive exam books published = 3115 + 3495 = 6610
→  Less percentage = [(6610 -5002)/ 6610] * 100 = 16080/661 = 24 %

4. Option A

→  Percentage = (310 * 100)/ 3115 = 10%

5. Option D

→ Story books published by B = 1955- [120+310+220+230+330] = 745
→  Literature books published by E and F = 475 + 360 = 835
→  Difference = 835 – 745 = 90

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