A motorist travels to a place 150 km away at an average speed of 50 km/hr and returns at 30 km/ hr. His average speed fo…

Average of first five odd multiples of 3 is -

3 years age, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the fami…

The mean of 20 items is 55. If two items 45 and 30 are removed, the new mean of the remaining items is :

The average temperature for the first four days of a week is 40.2° C and that of the last four days is 41.3° C. …

In the first 10 overs of a cricket game, the run rate was only 3.2. The run rate in the remaining 40 overs to reach the …

The average age of an adult class is 40 years. 12 new students with an average age of 32 years join the class, thereby d…

Out of 10 teachers of a school, on teacher retires and in place of him a new teacher 25 years old joins. As a result of …