Quantitative Aptitude - Arithmetic Ability Questions

The lengths of the diagonals of a rhombus are 8 cm and 6 cm. The area of rhombus is:

If sec 300° = x, then value of x is

If Rs. 10000 amounts to Rs. 11664 invested in compound interest(compounded annually) for two years then the annual rate of compound interest is

If the radius of a circle is increased by 15% its area increases by _____.

What is the remainder when 6910 is divided by 81?

A trader buys 500 kgs of cotton for Rs 9,000. 10% of this cotton is spoiled due to rain. At what rate (Rs/Kg) should he sell the rest to earn 10% profit?

The brother is elder to his sister by 6 years. Seven years ago the product of their ages was 72. What is the age of the brother?

Vijay can do a work in 8 hours. Vijay and Puneet together can do the same work in 6 hours. Puneet and Sachin together can do the same work in 4 hours. Sachin alone can complete the same work in how many hours?