Quantitative Aptitude - Arithmetic Ability Questions

When a number is increased by 21, it becomes 114% of itself. What is the number?

The area of a rhombus having one side 10 cm and one diagonal 12 cm is

Find the area (in cm2) of a semi-circle of radius 28 cm.

What is the simplified value of cosec Acot A + tan A2 ?

If tan A = 1/2 and tan B = 1/3, then what is the value of tan (2A + B)?

If 7x + 6y = 5xy and 10x ­- 4y = 4xy, then value of x and y is

A certain amount of money is divided between A and B in the ratio of 5:6. If B gets Rs. 360, the amount is

If a taxi going at 40 km/hr takes 25 minutes to travel a certain distance, by how much should it increase its speed (in km/hr) to travel the same distance in 20 minutes?