Quantitative Aptitude - Arithmetic Ability Questions

x and y are two numbers such that their mean proportion is 16 and third proportion is 128. What is the value of x and y?

A bag has Rs 20 in the form of 1­-rupee, 50­-paise and 10­-paise coins in the ratio of 2:3:5. Find the number of 50­-paise coins.

An equilateral triangle of side 6 cm is inscribed in a circle. Then radius of the circle is

A's salary is 50% more than that of B. Then B's salary is less than that of A by

If 7x - (3/2) * (4x - 9) = 6.5, then the value of x is?

(242699 + 167109) ÷ (9946 –9446) = ?

a% of b + b% of a = ______

A man can row his boat at a speed of speed of 4 kmph and he finds that the time taken rowing upstream is double to that taken downstream. Find the speed of the stream (in kmph).