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The average of 15 numbers is 80. The average of the first 6 numbers is 72. The average of the next 6 numbers is 33.33% more than the average of the first 6 numbers. The 13th number is 8 more than the 15th number, and the 14th number is 10 less than the 15th number. What is the average of the 13th and 14th numbers?

The average of 15 numbers is 80. The average of the first six numbers is 70. The average of the next six numbers is 20% more than the average of the first six numbers. What is the average of the last three numbers?

In a hostel, the average age of 40 students was 20 years. Later, 10 students left and 10 new students joined. The average age of the new group became 18.2 years. If the average age of the 10 students who left was 22.4 years, find the average age of the 10 students who joined.

In a class of a certain number of students, if a student weighing 60 kg joins, the average weight increases by 2 kg . If another student weighing 60 kg joins, the average increases by 3.5 kg over the original average. What was the original average weight of the class?

The average score of 50 students in a test is 136. The top 5 scorers had an average of 160 and the lowest 5 had an average of 100. What is the average of the remaining 40 students?

The average marks of 20 students in a mathematics test were 55. Later, it was discovered that one student's marks were wrongly recorded as 40 instead of 70. After correction, the average increases. A new student then joins the group whose marks are 20% more than the corrected average. What is the final average of the group?

The average of a group of 9 numbers is 51. If the first four numbers have an average of 47 and the last four numbers have an average of 55, what is the fifth number?

If the average of eight numbers is 60 and the average of the first five numbers is 51, what is the average of the last three numbers?

A school had 105 students with an average age of 30 years. Later, a new batch of students joined. After their inclusion, the average age dropped to 29.5 years, even though the newcomers had an average age of 28 years. Find the number of students in the new batch.

The average age of 12 players of a cricket team is the same as it was 3 years ago because 4 players, whose current average age is 30 years, have been replaced by 4 new players. What is the average age of new players ?

The average of 9 numbers is 57. If the average of the first 4 numbers is 54 and the average of the last 4 numbers is 60 , what is the fifth number?

In a digital learning centre, there are three types of online tests. The average score of a student in the first and second test is 84 . The average score in the second and third test is 82 . The average of the first and third test is 80 . If the student scored 4 marks less in the third test than in the first, find the marks obtained in the second test.

There are 11 numbers. The average of all 11 is 50 . The average of the first 6 numbers is 48 . The average of the last 6 numbers is 55 . What is the 6th number?

The average of 9 numbers is 83 . If the average of the first 4 is 89 and last 4 is 80 , what is the 5 th number ?

In a team of 85 employees, the average monthly sales per employee is ₹2.8 lakh. If 30 junior employees average ₹1.2 lakh each, what is the average monthly sales figure (in ₹ lakh) for the senior employees?

There are 2 consecutive even numbers and 3 consecutive odd numbers. The average of the even numbers is 3 more than the average of the odd numbers. If the sum of the even numbers is 2 more than the sum of the odd numbers, find the average of the odd numbers.

There are 5 consecutive integers and 4 consecutive integers. The average of the 5 integers is 2 less than the average of the 4 integers. The sum of the 4 integers is 2 more than the sum of the 5 integers. Find the average of the 5 integers.

The average monthly salary of 10 employees in a company's IT department is ₹45,000. If two new employees join, taking the total to 12, and the average becomes ₹46,500, what is the average salary of the two new employees?