The average age of all the students of a class is 18 years. The average age of boys of the class is 20 years and that of…

In a primary school the average weight of male students is 65.9 kg and the average weight of female students is 57 kg. I…

The average (arithmetic mean) of 3<sup>30</sup>, 3<sup>60</sup> and 3<sup>90</sup> i…

In a set of three numbers, the average of first two numbers is 2, the average of the last two numbers is 3, and the aver…

Of the three numbers, the average of the first and the second is greater than the average of the second and the third by…

The average age of a group of persons going for picnic is 16 years. Twenty new persons with an average age of 15 years j…

Students of three different classes appeared in common examination. Pass average of 10 students of first class was 70%, …

The average weight of 16 boys in a class is 50.25 kgs and that of the remaining 8 boys is 45.15 kgs. Find the average we…