Quantitative Aptitude - Arithmetic Ability Questions

If x - 2y = 2 and 3x + y = 20, then the value of (x,y) is

If 2cos2A - 1 = x, then the value of x is

What is the value of 13313 + 729 - 5123

In a circle, a chord, 5√2 cm long, makes a right angle at the centre. Then the length of the radius of the circle will be

The sum of radii of the two circles is 91 cm and the difference between their area is 2002 cm2 . What is the radius (in cm) of the larger circle?

The ratio of present ages of Rangana and Sayed is 7:5. After 11 years the ratio of their ages will be 4:3. What is Rangana's present age?

Two pipes fill a tank when working individually in 25 and 40 hours, respectively while a third pipe can drain the filled tank in 16 hours. If all the three pipes are turned on at the same time when the tank is empty, how long will it take to fill the tank completely ?

What is the reflection of the point (3, 2) in the line y = -2?