Quantitative Aptitude - Arithmetic Ability Questions

Find the radius of the circle if the length of its arc is 33 cm whose corresponding central angle is 90° ?

The sum of the ages of husband and wife at present is 60. Four years ago the ratio of their ages was 7:6. What is the age of the husband?

A boy in a train notices that he can count 31 telephone posts in 60 seconds. the distance between two posts is 60 meters. Calculate the speed of the train?

The average age of 40 students of a class is 16 years. If the average age of 24 students is 15.5 years and that of the 15 students is 16 2⁄3 years, then the age of 40th student is

A car travels a certain distance at 32 km/h and comes back at 68 km/h. What is the average speed for total journey?

In a circle with centre O, AB is a diameter and CD is a chord which is equal to the radius OC. AC and BD are extended in such a way that they intersect each other at a point P, exterior to the circle. The measure of ∠APB is

If (1 -­ cosA)/(1 + cosA) = x, then the value of x is

If  2x+14x = 1, then the value of  x2+164x2is