The average of 13 numbers is 10.The average of first 6 numbers is 8 and that of the last 6 numbers is 10. What will be the 13th number?
In an exam, the average score of 300 students is 48. If the average score of the students who passed is 60, and the average score of those who failed is...
The average of 10 numbers is 21.6. The average of the first four numbers is 17.5, and the average of the last three numbers is 24. The fifth number is 6...
Out of three numbers the average of the first and the second number is 37 more than the average of the second and the third number. What is the differen...
The average weight of 4 persons is 30 kg. The heaviest person’s weight is 24 kg more than the lightest person’s weight. If the average weight of the...
In a group of 28 friends, the average age is 22 years. One person aged 20 leaves, and 2 new people with an average age of 24 years join. When a new mem...
The average weight of a group of 'x' friends increased by 1 kg when a person weighing 61 kg joined them. Later, when two more per...
The average age of A and B is 15 years. If A is to be replaced by C, the average would be 14 years. The average age of C and A is 16 years. Find the age...
If the average marks of the three batches 32, 45 and 54 student respectively is 50, 42 and 35, then find the approximate average mark of all the students?
A player’s average score in first 10 games was a certain number. In the next 10 games, his average score was 90, due to which his overall average incr...
