Study the table and answer the questions and give answer the following questions.

What is the overall average of marks in the four subjects in the year 2009?

Directions: The following pie-chart represents the result of 600 successful students in various subject of an examination. Study the Pie-chart and answer question.

The number of students who passed in Bengali is –

Directions: The following pie-chart represents the result of 600 successful students in various subject of an examination. Study the Pie-chart and answer question.

The number of students passed in English is less than the number of students passed in Mathematics by

Directions: The following pie-chart represents the result of 600 successful students in various subject of an examination. Study the Pie-chart and answer question.

The percentage of students who passed in English is

Directions: The following pie-chart represents the result of 600 successful students in various subject of an examination. Study the Pie-chart and answer question.

The number of students passed in Bengali is greater than the number of students passed in History by

Directions: The following pie-chart represents the result of 600 successful students in various subject of an examination. Study the Pie-chart and answer question.

The ratio of students who passed in Bengali, to the students who passed in History is

Directions: The line graph shows the number of work visas issued by a country in each year from 2011 to 2016. Study the diagram and answer the following questions . 

Number of work visas issued in 2016 were lower than the previous year by ? 

Directions: The line graph shows the number of work visas issued by a country in each year from 2011 to 2016. Study the diagram and answer the following questions . 

Number of work visas issued were more than those issued in the previous years in how many years ?