Quantitative Aptitude - Arithmetic Ability Questions

If two successive discounts of 50% and 10% are offered, then what is the net discount (in %)?

x and y are two numbers such that their mean proportion is 8 and third proportion is 512. What is the value of x and y?

Marked price of a chair is Rs 800 and discount is 15%. What is additional discount (in percentage) should be offered to the customer to bring the price of chair to Rs 578?

Find the value of 777777?

If 1/6 of x - 7/2 of 3/7 equals - 7/4, then the value of x is

A truck covers a distance of 550 metres in one minute where as a bus covers a distance of 33 km in 3/4 hours. Then the ratio of their speeds is :

What is the equation of the line whose y-intercept is -3 and makes an angle of 45° with the positive x-axis?

tan3A is equal to