Quantitative Aptitude - Arithmetic Ability Questions

At 20% discount the selling price of an article is Rs 2400, what is the selling price (in Rs) if the discount is 32.5%?

The population of a town is 350000. It increases annually at the rate of 20%. What will be the population after 2 years?

If 3n = 2187, then the value of n is:

If 3x + 4y – 2z + 9 = 17, 7x + 2y + 11z + 8 = 23 and 5x + 9y + 6z – 4 = 18, then what is the value of x + y + z – 34?

A thief is stopped by a policeman from a distance of 350 metres. When the policeman starts the chase, the thief also starts running. Assuming the speed of the thief as 5 km/h and that of the policeman as 7 km/h, how far the thief would have run, before he is over- taken?

If x2+ x = 19, then what is the value of (x + 5)2+ [1/(x + 5)2]?

What is the HCF (highest common factor) of 57 and 513?

Triangle ABC as shown in figure has line XY parallel to the BC and the line BY is the bisector of angle XYC. Which of the following option is correct?