Exams

The angle of elevation of an aeroplane from a point on the ground is 60 deg. After flying for 30 seconds, the angle of elevation changes to 30 deg. If the aeroplane is flying at a height of 4500 m, then what is the speed (in m/s) of aeroplane?

The table below depicts the Number of Books Sold by 5 cities during 5months. Study the following table and answer the questions.

What is the respective ratio between the total number of books sold by City A in July and September together and total number of books sold by  City Ein August and October together?

The given table represents the marks obtained by four students W, X, Y and Z in four subjects P, C, B and M with the maximum marks in each subject being 100.

The average marks of the four students in M is

One horse power is

Consider the given question and decide which of the following statements is sufficient to answer the question.

What is the weight of ten iron balls if each ball is of the same weight?

Statements :

1. One-fourth of each ball's weight is 5 kg.

2. The total weight of three iron balls is 20 kg more than the total weight of two iron balls.

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

b_a_c_bc_b_ a

Choose the correct option for the following figure.

The angle of elevation of the top of a 36 m tall tower from the initial position of a person on the ground was 60 deg. She walked away in a manner that the foot of the tower, her initial position and the final position were all in the same straight line. The angle of elevation of the top of the tower from her final position was 30 deg. How much did she walk from her initial position?