Average MCQs

What is the average of all natural numbers from 21 to 39?

In a class of 50 students there are 22 girls who scored an average of 35 marks in the test. What is the average marks of the boys if the class average is 42 marks?

If the average of 5 consecutive integers is x then, find the average of next to next 5 consecutive integers.

The average of 8 consecutive natural numbers is 38.5. What is the largest of these 8 numbers?

What is the average of all numbers between 11 and 80 which are divisible by 6?

The average age of 120 students in a group is 13.56 years. 35% of the number of students are girls and the rest are boys. If the ratio of the average age of boys and girls is 6 : 5, then what is the average age (in years) of the girls?

The ratio of the number of players in the three cricket teams A, B and C is 2 : 5 : 3. If the ratio of number of runs scored per player for each of the three teams A, B and C, is 30 : 17 : 25 respectively, then what is the average number of runs scored per player across all the three teams collectively?

The number of students in a class is 75, out of which $$33\frac{1}{3}\% $$ are boys and the rest are girls. The average score in mathematics of the boys is $$66\frac{2}{3}\% $$ more than that of the girls. If the average score of all the students is 66, then the average score of the girls is:

The average weight of a certain number of students in a class is 68.5 kg. If 4 new students having weights 72.2 kg, 70.8 kg, 70.3 kg and 66.7 kg join the class, then the average weight of all the students increases by 300 g. The number of students in the class, initially, is: