Pie Charts - General Aptitude

The following pie-charts show the distribution of students of graduate and post-graduate levels in seven different institutes in a town.

Distribution of students at graduate and post-graduate levels in seven institutes:

Q1:

Total number of students studying at post-graduate level from institutes N and P is

A 5601

B 5944

C 6669

D 8372

ANS:C - 6669

Required number = (15% of 24700) + (12% of 24700)
  = 3705 + 2964
  = 6669.