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Twinkle

· started a discussion

· 1 Months ago

question attempt in reasoning (Question:99285.0)

How 20 obtained ?

Question:

DIRECTIONS: Answer the questions on the basis of the information given below:


The RBI exam comprises 200 questions divided equally into four sections. The test duration is 150 min. Hit ratio (HR) is defined as the ratio of the number of correct answers to the number of wrong answers. The following table gives a detail for an aspirant Rustam Pabri.


Section

Time taken per question

(in minutes)

Hit ratio

EL

0.70

4

GA

1.00

4

QA

0.80

4

LR

1.10

3


Please note that for every correct answer, one mark is awarded; for every wrong answer, ¼  mark is deducted. No marks are deducted for questions left unanswered. The net score is obtained by deducting ¼ the number of wrong answers from the total number of correct answers.
What is the maximum possible net score that Rustam Pabri can get?
Options:
A) 114.50
B) 122.25
C) 108.75 
D) 126.25
Solution:

Section

Total time

Max.

Correct

Max.

Wrong

Max. net

score

EL

35 min

40

10

37.5

QA

40 min

40

10

37.5

GA

50 min

40

10

37.5

LR

55 min

36

12

33

The order of attempting the sections for maximum net score would be EL-QA-GA-LR.

In the first 125 mm, 50 questions each of EL, QA and GA can be attempted. In the remaining 25 min, (5 + 15 = 20) questions of LR can be attempted. Thus, the maximum possible net score

=37.5 + 37.5 + 37.5 + 13.75 = 126.25

Twinkle

· commented

· 1 Months ago

ok i got it
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