If 12 men and 16 boys can do a piece of work in 5 days; 13 men and 24 boys can do it in 4 days, then the ratio of the daily work done by a man to that of a boy is 

A train crosses two persons travelling at 3 kmph and 5 kmph in the same direction in 10 seconds and 11 seconds respectively. The speed of the train is:

The sum of the squares of 2 number is 146 and the square root of one of them is 5. The cube of the other number is 

Direction: The following graph shows the number of boys and girls in Class V, Class VI, Class VII and Class VIII. Study the graph and answer the question.

What is the average number of girls in all the classes?

The radius of circle is increased by 1%. How much does the area of the circle increased? 

The bar graph given below shows the sales of books (in thousand number) from six branches - B1, B2, B3, B4 , B5 and B6 of a publishing company during two consecutive years 2000 and 2001.

Find the percentage (approximate) of the average sales of branches B2, B4 and B6 in the year 2001 to the average sales of branches B1, B3 and B5 in the year 2001.

Two equal circles of radius 4 cm intersect each other such that each passes through the center of the other. The length of the common chord is

A ladder rests against a wall at a height of 10 meters. If the ladder makes 30° along the ground. Find the distance from the wall of the foot of the ladder.