Quantitative Aptitude - Arithmetic Ability Questions

Product of 9b2, 3a2 and 4ab is

A man covered a certain distance by a train running at the speed of 50 km/hr and covers the same distance back by walking at the speed of 5 km/hr. Ifthe whole journey took 5 hours 30 minutes, then what was the distance (in km) of one side?

Mr. Mahesh sold a bus for Rs. 22,100 with a loss of 15%. At what price should the bus be sold to get a profit of 15%?

Given a -­ b = 2, a3 - b3=26 then (a + b)2 is

What is the value of (1 + cotA)2 + (1 -­ cotA)2?

If x , y, and z are real numbers such that (x - 3)2 + (y - 4)2 + (z - 5)2 = 0 then (x+y+z) is equal to

Find the area (in sq.cm) of a semi-circle of radius 7 cm

The perimeter and the breadth of a rectangle are 60 cm and 14 cm respectively. Find its area (in cm²)