Quantitative Aptitude - Arithmetic Ability Questions

If (X/4) = (Y/5) = (Z/9), then what is X : Y : Z?

The equation of a line is given by 4y-6x+9=0. Find the slope of other line which is perpendicular to it.

What is the measure (in degree) of an exterior angle of a regular polygon of 9 sides?

Let O be the orthocentre of the triangle ABC. If ∠BOC = 150°, Then ∠BAC is

If x = (√5) + 1 and y = (√5) – 1, then what is the value of (x2/y2) + (y2/x2) + 4[(x/y) + (y/x)] + 6?

A vendor buys 6 bananas for Rs 25 and sells them at 3 for Rs 20. What is his profit percentage?

Rehman goes on a trip on his motor-cycle and rides for 661 kms. If he rides for 8 hours at a speed of 31 km/hr, find at what speed he travels for the remaining 7 hours of the journey?

The difference between compound interest and simple interest on Rs. 5000 for 2 years at 8% per annum payable yearly is