Quantitative Aptitude - Arithmetic Ability Questions

The average age of 24 students is 12 years. It was observed that while calculating the average age, the age of a student was taken as 14 years instead of 8 years. What will be the correct average age (in years)?

Flight A usually takes 1 hour more than Flight B to travel a distance of 7200 km. Due to engine trouble speed of flight B falls by a factor of 1/6th, so it takes 36 minutes more than Flight A to complete the same journey? What is the speed of Flight A (in km/hr)?

In a circle, a diameter AB and a chord PQ (which is not a diameter) intersect each other at X perpendicularly. If AX : BX = 3 : 2 and the radius of the circle is 5 cm, then the length of chord PQ is

What is the length of the arc whose central angle is 30° and radius of the circle is 21 cm?

An equilateral triangle of side 6 cm is inscribed in a circle. Then radius of the circle is

Ticket for an adult is Rs 1500 and a child is Rs 800. 1 child goes free with two adults. If a group has 25 adults and 12 children what is the discount the group gets?

A missile travels at 1116 km/h. How many metres does it travel in one second?

Average of two numbers is 8 and average of other three numbers is 3 ; the average of the five numbers is