Quantitative Aptitude - Arithmetic Ability Questions

The area of a triangle with vertices A (0, 8) , O (0,0) and B (5, 0) is:

The length of a rectangle is increased by 25%. To maintain the same area, the breadth has to be decreased by

A sum of Rs 125 is divided among u, v and w in such a way that u gets Rs 10 more than v and v gets Rs 5 more than w. What is the ratio of their shares?

The four sides of a quadrilateral are in the ratio of 2:3:4:5 and its perimeter is 280m. The length of the longest side is

The area of an equilateral triangle is 25√3 sq.cm. Find its side (in cm).

If 2x/3 - [5(4x/5 - 4/3)]/2 = 1/3, then what is the value of x?

An aeroplane flying horizontally at a height of 3 Km. above the ground is observed at a certain point on earth to subtend an angle of 60°. After 15 sec flight, its angle of elevation is changed to 30°. The speed of the aeroplane (taking √3 = 1.732) is

In the given figure, PQRS is a square and SRT is an equilateral triangle. What is the value (in degrees) of angle SOR?