The given pie charts represent the distribution of candidates who enrolled for a bank clerical examination and the candidates (out of those enrolled) who passed the examination. from five different institutes P, Q, R, S and T. Study the pie charts and answer the question that follows.

(i) Total number of candidates who enrolled for the examination from five institutes = 5500

(ii) Total number of candidates who passed the examination from five institutes = 3300

The average number of candidates passed from institutes P and Q together is what percentage of the total number of candidates enrolled from institutes P and Q together?

31.5%

Average number of candidates passed from institutes P and Q

=  \(\frac{1 }{2}\) × \(\frac{18+24 }{100}\) × 3300

= \(\frac{1 }{2}\) × \(\frac{ 42 }{100}\) × 3300

= 693

Total number of candidates enrolled from P & Q = \(\frac{20+20 }{100}\) × 5500

= \(\frac{2 }{5}\) × 5500

= 2200

Required percentage = \(\frac{693}{2200}\) × 100

= 31.5%