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What are the best ways to prepare for the DILR section?

9 Views | Posted 2 years ago

Asked by Shiksha User

1 Answer

Answered by

Vipra Shrivastava | Contributor-Level 10

2 years ago

The best way to prepare for DILR section is through practice. Before starting the preparation, aspirants should be accustomed to the question types by going through previous years’ question papers and solving those. Since there is not much conceptual understanding required in this section, practice is the key to excel in this area.

Some of the most popular books on DILR section that you can refer are How to Prepare for Data Interpretation and Logical Reasoning for CAT by Arun Sharma, Logical Reasoning and Data Interpretation for the CAT by Nishit Sinha, Data Interpretation and Logical Reasoning for CAT by Pearson, to name a few.

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The following table shows the highest and the average marks obtained by students in subjects over the year. The maximum mark in each subject is 100.

SUBJECTS
	Botany		Economics		Physics		Chemistry		Zoology
	High	Average	High	Average	High	Average	High	Average	High	Average
2001	85	62	75	52	98	65	88	72	72	46
2002	80	70	80	53	94	60	89	70	70	55
2003	82	65	77	54	85	62	95	64	64	58
2004	71	56	84	65	92	68	97	68	68	49
2005	75	52	82	66	91	64	92	75	75	58
2006	82	66	81	57	89	66	98	72	72	62

The average highest marks in English in 2001, 2002 and 2005 were exactly equal to the highest marks in Hindi in which of the following years?

Payal Gupta

Average the highest marks

$\frac{85 + 80 + 75}{3} = \frac{240}{3} = 80$

Therefore, the correct answer is option (d)

The following table shows the highest and the average marks obtained by students in subjects over the year. The maximum mark in each subject is 100.

SUBJECTS
	Botany		Economics		Physics		Chemistry		Zoology
	High	Average	High	Average	High	Average	High	Average	High	Average
2001	85	62	75	52	98	65	88	72	72	46
2002	80	70	80	53	94	60	89	70	70	55
2003	82	65	77	54	85	62	95	64	64	58
2004	71	56	84	65	92	68	97	68	68	49
2005	75	52	82	66	91	64	92	75	75	58
2006	82	66	81	57	89	66	98	72	72	62

What was the approximate percentage increase in average marks in History from 2001 and 2002?

Payal Gupta

Percentage Increase $\frac{55 - 46}{46} \times 100 = 20 %$

The following table shows the highest and the average marks obtained by students in subjects over the year. The maximum mark in each subject is 100.

SUBJECTS
	Botany		Economics		Physics		Chemistry		Zoology
	High	Average	High	Average	High	Average	High	Average	High	Average
2001	85	62	75	52	98	65	88	72	72	46
2002	80	70	80	53	94	60	89	70	70	55
2003	82	65	77	54	85	62	95	64	64	58
2004	71	56	84	65	92	68	97	68	68	49
2005	75	52	82	66	91	64	92	75	75	58
2006	82	66	81	57	89	66	98	72	72	62

The difference in the average marks in History between 2003 and 2004 was exactly equal to the difference in the highest marks in Hindi between which of the following pair of years?

Payal Gupta

The difference is 9. Therefore the correct answer is option (a)

Direction for question: Rea refer to the following table and solve the questions based on it.

The following table shows the highest and the average marks obtained by students in subjects over the year. The maximum mark in each subject is 100.

SUBJECTS
	Botany		Economics		Physics		Chemistry		Zoology
	High	Average	High	Average	High	Average	High	Average	High	Average
2001	85	62	75	52	98	65	88	72	72	46
2002	80	70	80	53	94	60	89	70	70	55
2003	82	65	77	54	85	62	95	64	64	58
2004	71	56	84	65	92	68	97	68	68	49
2005	75	52	82	66	91	64	92	75	75	58
2006	82	66	81	57	89	66	98	72	72	62

What were the grand average marks of the five subjects in 2005?

Payal Gupta

$A v e r a g e = \frac{52 + 66 + 64 + 75 + 58}{5} = \frac{315}{5} = 63$

The XYZ manufacturing company produces a product which has 6 month demand cycle as given below:

Month	Demand in Units	Working days/month
January	600	22
February	1000	19
March	800	21
April	200	21
May	400	22
June	600	2

Company’s policy is to retain safety stock of 20% of monthly demand and each month’s safety stock becomes the opening stock for the next month, and opening stock for January is 100 units. Each unit requires 10 labour-hours and company works 8 hour/day.

If there are currently 20 workers employed, and how many worker are needed to be laid off in January to accommodate demand?

Payal Gupta

Please find the answer below

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