A certain sum becomes Rs. 1020 in 5 years and Rs. 1200 in 8 years at simple interest. What is the value of principal? 

A article is marked at Rs. 65 and a customer buys it for Rs. 56.16 and got two successive discount of 4% and k%. Find the value of   k?

Study the following bar chart and answer the questions carefully.

What is the absolute change in overall sales turnover of the five companies together between 2001 - 2002 and 2002 - 2003 ?

Mohit borrowed Rs. 22000 at 5% simple interest repayable in 5 equal installments. What will be the annual installment payable by him?

The area of a triangle with vertices A (0, 8), O (0, 0), and B (5, 0) is :

Greatest among the numbers
$$^{3}\sqrt{9},\sqrt{3},\ ^{4}\sqrt{16},\ ^{6}\sqrt{180}$$ is

Directions: The bar graph given below shows the spending of family income on various items and savings during 1993. Observe the graph and answer the following questions:

If the total income of the family during 1993 was ₹ 100000, the savings of the family in 1993 was: 

Direction: what should come in place at question mark(?).

(0.85% of 405) +(2.25% of 550)=?