The value of $${4- \sqrt{0.04} \over 4+\sqrt{0.4} } $$  is closed to

Study the following table carefully and answer the questions given below.

What was approximate percentage increase in the number of students in Commerce discipline from 2003 to 2004?

Direction: Percentage of different types of employees in a company in two consecutive years.

In 1997 the total number of which of the following types of pairs of employees was approximately equal to the employees in 1998? 

Direction : What value should come in the place of question mark (?) in the following questions?

283 ÷25x4 + 186 = ? 

If (a-b)=-3 , (b-c)=5 and (c-a)=-2, then the value of $$ {a^{3}+b^{3}+c^{3}-3abc\over a+b+c}$$.

The interest compounded annually on a sum of Rs. 56000 at a rate of 7% p.a. after 3 years is what percentage of the simple interest on a sum of Rs. 72000 at a rate of 9% p.a. after 5 years?

The length of the diagonal of a square is 'a' cm. Which of the following represents the area of the square (in sq. cm)? 

A man bought 20 dozen eggs for Rs. 720. What should be the selling price of each egg if he wants to make a profit of 20 %?