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?

A sum becomes Rs. 2916 in 2 years at 8 % per annum compound interest. The simple interest at 9% per annum for 3 years on the same amount will be 

An interval of 3 hours 40 minutes is wrongly estimated as 3 hours 45.5 minutes. The error percentage is  

The number 1254216 is divisible by which of the following numbers?

What percent decrease in salary would exactly cancel out the 20 percent increase? 

Directions: Given table shows the data of population in 5 different parks. Study the data carefully and answer the questions.

What is average of male population in park B, C and D?

Two bikers A and B start and ride at 75 km/hr and 60 km/hr respectively towards each other. They meet after 20 minutes. How far (in km) were they from each other when they started?

If one of the interior angles of a regular polygon is equal to 5/6 times of one of the interior angles of a pentagon, then the no. of sides of the polygon.