Quantitative Aptitude - Arithmetic Ability Questions

Due to inclement weather, an air plane reduced its speed by 300 Km/ hr, and reached the destination of 1200 km late by 2hrs. Then the schedule duration of the flight was.

If Data Interpretation and Modern Maths were taught for a combined time of 96 hours, then for how much time (in hours) were Number system and Geometry
taught?

θ is a positive acute angle and sinθ ­ cosθ = 0, then the value of secθ + cosecθ is

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

If 13x2 = 172 - 92, find the value of x?

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

If x/3 - [5(7x/5 - 4/3)]/2 = -x/6, then what is the value of x?

A line cuts two concentric circles. The lengths of chords formed by that line on the two circles are 4 cm and 16 cm. What is the difference (in cm2) in squares of radii of two circles?