Question

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 (in percentage) of these four schools is ________

• A.
  $58.8$
• B.
  $59.0$
• C.
  $58.5$
• D.
  $59.3$

Answer 1

The correct option is B

$59.0$
$Averagepercentageofpassingstudents$

$=\frac{\frac{\text{Total no. passed students}}{\text{Total no. of students}}}{4}\times 100$

$=\frac{\frac{280}{500}+\frac{330}{600}+\frac{455}{700}+\frac{240}{400}}{4}\times 100$

$=\frac{0.56+0.55+0.65+0.60}{4}\times 100=59\%$