Quantitative Aptitude - Arithmetic Ability Questions

If a - b = -6 and a2 + b2 = 44, then ab is

The height of a tower is 300 meters. When its top is seen from top of another tower,then the angle of depression is 60°. The horizontal distance between the bases of the two towers is 120 metres. What is the height (in metres) of the small tower?

The cost price of an article is x. It is marked up by 150%. It is sold at Rs 600 after giving 40% discount. What is x (in Rs)?

The reciprocal of the sum of the reciprocals of 8/7 and 5/6 is:

The first and last terms of an arithmetic progression are 23 and ­42. What is the sum of the series if it has 14 terms?

What is the average of all numbers between 100 and 200 which are divisible by 13?

Raj takes 2 1/3 hrs to complete a certain distance at a speed of 51 kmph. What time would Kiran take to complete the same distance at a speed of 68kmph?

If price of the table is increased by 25%, then a person can buy 25 table less for Rs 25000. What is the original price (in Rs) of the table?