Quantitative Aptitude - Arithmetic Ability Questions

To cover a certain distance with a speed of 60 km/hr, a train takes 15 hours. If it covers the same distance in 12 hours, what will be its speed?

If the perimeter of a semi-circle is 36 cm, then find its radius (in cm).

If cosθ = x2-y2x2+y2, then the value of cotθ is

If a = 3+23-2, b = 3-23+2 then a2+b2-ab ?

If 5 - 2x ≥ 4 - x and 3(2 - x) > 2 - 4x; then x can take which of the following values?

The area of a rhombus is 24 m2 and the length of one of its diagonals is 8 m. The length of each side of the rhombus will be:

The distance between the tops of two building 38 metres and 58 metres high is 52 metres. What will be the distance (in metres) between two buildings?

A and B can complete a task in 20 days, B and C can complete it in 30 days while C and A can do the same task together in 24 days. How many days will each of and C take to complete the task individually?