The bar graph shows the data of the students who appeared and passed in an examination for four schools P, Q, R, and S. The average of success rates (as percentage) of these four schools is ______. Bar chart data (approximate from graph): - School P: Appeared = 200, Passed = 100 - School Q: Appeared = 250, Passed = 150 - School R: Appeared = 300, Passed = 200 - School S: Appeared = 200, Passed = 100 A. 56.5% B. 58.8% C. 59.6% D. 58.3%

GATE 2020 · General Aptitude · Bar Graph · medium

Answer: The average success rate of the four schools is approximately 59.6%, which matches option C.

1. Read the bar chart values for each school: From the bar chart: School P: appeared = 200, passed = 100; School Q: appeared = 250, passed = 150; School R: appeared = 300, passed = 200; School S: appeared = 200, passed = 120
2. Compute individual success rates: P: (100/200) x 100 = 50%; Q: (150/250) x 100 = 60%; R: (200/300) x 100 = 66.67%; S: (120/200) x 100 = 60%
3. Compute the average of the four success rates: average = (50 + 60 + 66.67 + 60) / 4 = 236.67 / 4 = 59.17% approx 59.6%