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Pie Charts - General Aptitude

Study the following graph carefully and answer the questions given below:

Distribution of candidates who were enrolled for MBA entrance exam and the candidates (out of those enrolled) who passed the exam in different institutes:

Q1:

What is the percentage of candidates passed to the candidates enrolled for institutes Q and R together?

A 68%

B 80%

C 74%

D 65%

ANS:B - 80%

Candidates passed from institutes Q and R together = [(13% + 17%) of 5700]
= 30% of 5700.
Candidates enrolled from institutes Q and R together = [(15% + 10%) of 8550]
= 25% of 8550.
Therefore Required Percentage
= ( 30% of 5700 x 100 ) %
25% of 8550
= ( 30 x 5700 x 100 ) %
25 x 8550
= 80%.