Quantitative Aptitude - Arithmetic Ability Questions

The angle of elevation of the top of a tower from a point A on the ground is 30°. On moving a distance of 20 metres towards the foot of the tower to a point B, the angle of elevation increases to 60°. The height of the tower in meters is

The distance between two places can be covered in 3.5hrs at a speed of 62 kmph. If the speed is increased by 8 kmph, how much time would be saved?

In a committee there are 15 members. If two members whose ages are 45 years and 55 years are replaced by the two new members, then average age of 15 members is increased by 2 years. What is the average age (in years) of the new members?

The least number to be added to 13851 to get a number which is divisible by 87 is

If the value of √30  is approximately 5.477, then what is the approximate value of 56 ?

What is the area (in sq cm) of a circle whose circumference is 26.4 cm?

The slopes of two lines are 1/√3 and √3. What is the angle between these two lines?

What is the value of 96+21624?