Quantitative Aptitude - Arithmetic Ability Questions

Find the value of 532+108

What is the value of ( 1/2 - cot45) ?

In ΔPQR, S and T are points on side PQ and PR respectively. ST is parallel to QR. If S divides PQ in the ratio 4:1 and length of QR is 15 cm,what is the length of ST?

There are two numbers such that the first number is half of the second number. If their average is 57, then what is the first number?

To cover a distance of 144 km in 3.2 hours what should be the average speed of the car in meters/second?

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?

There are a total of 200 students in a school, of which 7/10th are boys. Find the number of girls in the school.

Find two numbers such that their mean proportion is 12 and third proportion is 768.