Pie Charts - Data Interpretation Questions

      data-interpretation-pie-charts

1) If 250 students took the exam, how many students get D grade?
(A) 35
(B) 25
(C) 10
(D) 29

View Answer

Answer: Option B

Solution:
In the given diagram
A% + B% + C% + D% + F% = 100%
20% + 25% + 10% + D% + 35% = 100%
90% + D% = 100%
D% = 10%
Now, 10% of 250 is => 250 *
10/100
= 25

2) If 500 students give the exam, how many students get C grade?
(A) 50
(B) 20
(C) 35
(D) 10

View Answer

Answer: Option A

Solution:
10% of 500 = 500 *
10/100
= 50

3) What percent of the students who failed the exam would have had to pass it, in order for percent of students passing the exam to be at least 77% out of 500?
(A) 15%
(B) 21%
(C) 23%
(D) 27%

View Answer

Answer: Option C

Solution:
No. of passed students = 500 *
77/100
= 385
Thus for the passing rate to have been at least 77%, no more than 115 students, which is 23% of 500

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