Quantitative Aptitude - Arithmetic Ability Questions

If x - y = 6 and xy = 40, then find x2 + y2 ?

Kiran swims in a 90 m long pool. He covers 360 m in two minutes by swimming from one end to the other and back 0 along the same straight path, twice. Find the average speed of Kiran.

The sum of a fraction and 3 times its reciprocal is 19/4. What is the fraction?

If a person has sold an article for Rs. 1300 and made a profit of 30%, find the cost price of the article.

ABCD is a rectangle. P is a point on the side AB as shown in the given figure. If Dp = 13, CP = 10

An aeroplane flying horizontally at a height of 3 Km. above the ground is observed at a certain point on earth to subtend an angle of 60°. After 15 sec flight, its angle of elevation is changed to 30°. The speed of the aeroplane (taking √3 = 1.732) is

If a+1b= b+1c = c+1a (a , b, c are not equal) then the value of abc = 

If x = 313- 3-13, then 3x3 + 9x value is