Direction: Study the following table carefully to answer these questions.

What is the average number of students appeared from all the schools in 2007?

Three numbers are such that the average of first two numbers is 2, the average of the last two numbers is 3 and the average of the first and the last numbers is 4, then the average of three numbers is equal to. 

The mean of the first 7 prime numbers is:

If $${(2cos^3 A-cosA)\over (sin A- 2 sin^3 A)=1}$$ then what is the value of A?

The real number to be added to 13851 to get a number that is divisible by 87 is :

A manufacturer fixes his selling price at $$33{1\over3}\% $$ over the cost of production. If the cost of production goes up by 12 % and manufacturer raises his selling price by 10%, his percentage profit is 

What is the compound interest on Rs. 48,000 for 2 years at 20% p.a., if interest is compounded annually?

A tank can be filled by A in 60 minutes and emptied by B in 75 minutes. The tank is half filled and Ravi wants to fill the tank but opens B mistakenly and realizes after half hour and closed tap B. He then opens A and tank is completely filled in _______ minutes.