Quantitative Aptitude - Arithmetic Ability Questions

The slopes of two lines are 1/√3 and √3. What is the angle between these two lines?

If a -­ b = 3 and ab =28, then a3 - b3 is

If Giri's salary is 9/5 times of Hariprasad's and Shaukat's is 9/2 times of Hariprasad's, what is the ratio of Giri's salary to Shaukat's?

The length of the diagonal of a square is 10 cm. What is area of this square?

If (x/5) + (5/x) = – 2, then what is the value of x3?

20% discount is offered on an item. By applying a promo code the customer wins 15% cash back. What is the effective discount?

The weights of two iron balls are 3.5 kg and 7.5 kg. What is the percentage weight of the 1st ball with respect to 2nd ball.

If 16% of an electricity bill is deducted, Rs 1806 is still to be paid. How much was the bill?