Quantitative Aptitude - Arithmetic Ability Questions

An equilateral triangle ABC is inscribed in a circle of radius 20√3.
What is the length of the side of the triangle?

Roshan's current age is three years less than 1.5 times that of Usha's. 12 years ago Usha's age was three years more than half of Roshan's age. What is Roshan's present age in

How many times in a week does both the hands of the clock will coincide with each other?

A dealer marks his goods 20% above their cost prices. Then,he allows such a discount on the marked price so that he makes a profit of 8%. The rate of discount is:

At 22% discount the selling price of a refrigerator is Rs 26000, what is the selling price if the discount is 40%?

What is the slope of the line, parallel to the line 3x -­ 6y = 4?

If a + b = 10 and ab = 21, then the value of (a - b)2 is

What is the reflection of the point (4 , -3) in the line y = 1?