Average Questions

In a class of 56 students there are 28 girls. The average weight of these girls is 46 kg and average weight of the full class is 51 kgs. What is the average weight of the boys of the class?

The mode of the data 12, 1, 10, 1, 9, 3, 4, 9, 7, 9 is

The sum of a non-zero number and ten times its reciprocal is 7. Find the number.

There are a total of 200 students in a school, of which 7/10th are boys. Find the number of girls in the school.

For the data given below. find the sum of mode. median and mean.6, 3, 8, 4, 3, 11, 7, 4, 5, 4.

The average of 10 numbers is X and one of the number is 38. If 38 is replaced with 19, then what will be the new average?

One diagonal of a rhombus is half the other. If the length of the side of the rhombus is 20 cm, what is the area of the rhombus?

The average marks of 40 students in an examination was 25. It was later found that the marks of one student had been wrongly entered as 73 instead of 37. What is the value of correct average?