Quantitative Aptitude - Arithmetic Ability Questions

A shopkeeper, sold walnuts at the rate Rs 1,190 a kg and bears a loss of 10%. Now if he decides to sell it at Rs 1,249.5 per kg, what will be the result?

The sum of the ages of Ram and Shyam is 49. The difference between the age of Shyam and twice the age of Ram is 8. What is the age (in years) of Ram?

If (x/y)a-4 = (y/x)2a-5, then what is the relation between x and y?

If √(1 - sin2A) = x, then the value of x is

In triangle XYZ, G is the centroid. If XY = 11 cm, YZ = 14 cm and XZ = 7 cm, then what is the value (in cm) of GM ?

How many numbers are there from 2000 to 7000 which are both perfect squares and perfect cubes?

What is the value of [12/(√5 + √3)] + [18/(√5 – √3)]?

Seven friends spent Rs 14 each on a project and the eighth friend spent Rs 21 more than the average expenditure of all eight of them. What is the amount of total money (in Rs) spent by them?