Quantitative Aptitude - Arithmetic Ability Questions

A trader had 9 quintals of wheat. He sold a part of it at 10% profit and the rest at 20% profit, so that he made a total profit of 14 %. How much wheat did he sell at 20% profit?

Raghu has invested Rs. 1000 and received Rs. 1300 at 6% per annum simple interest after X years. Find thevalue of X.

Find the square root of 15625.

PQ is the chord of a circle whose centre is O. ROS is a line segment originating from a point R on the circle that intersect PQ produced at point S such that QS = OR. If ∠QSR = 30°, then what is the value (in degrees)of POR?

If the price of pen decreases by 20%, then a man can buy 10 more pens for Rs 100. What is the new price (in Rs) of each pen?

26 is 0.4% of which number?

If 6A = 7B = 5C; find A : B : C

What is the value of  4cos90-A sin390+A - 4sin90+A cos390-Acos180+8A2 ?