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In a science club, the average score of 20 students in a monthly test is 68.5. After including the scores of 4 more students, the overall average becomes 70.2 . If the scores of two of the new students are 72.5 and 75.5 , respectively, and the remaining two students have equal scores, find the score of each of the remaining two students.

A batsman's average score for a certain number of innings is 66. If he scores 144 runs in the next innings, his average becomes 72. How many innings did he play earlier?

The average age of 30 students in a class is 15 years. When a new student is admitted, the average increases by 0.3 years. What is the age of the new student?

The monthly average salary for 9 employees plus one supervisor is ₹12,000. If the supervisor earns ₹30,000, what is the average salary of the 9 employees?

A company has 60 employees, of whom 45% are women. The average monthly salary of the women is ₹60,000, while that of the men is ₹78,000. What is the overall average monthly salary (in ₹ thousands)?

The average age of a committee of 8 members increases by 4 years when two women aged 34 and 44 years are replaced by two men. What is the average age of these two men?

The average weight of 40 students is 70 kg. If one student is removed, the average drops to 69.5 kg. What is the weight of the removed student?

In a group of 30 boys, the average height was initially determined to be 150 cm. However, it was later discovered that the height of one boy was incorrectly recorded as 154 cm when it should have been 145 cm. Calculate the accurate average height.

The average weight of 12 boxes is 18 kg. If the heaviest box weighs 24 kg and the lightest weighs 12 kg, what is the average weight of the remaining boxes?

A student took 6 tests and had an average of 52. If his average after 7 tests increased to 63, what was his score on the 7th test?

The average marks of 12 students is 85. When one student is removed, the average of the remaining 11 becomes 82. What were the marks of the removed student?

The average score of a batsman in 20 innings is 43. If his highest score of 115 is excluded, what is the new average?

The average temperature of a city from Monday to Friday is 30°C. If the temperature on Saturday is 55°C, what will be the average temperature from Monday to Saturday?

The average marks of 40 students is 66 . If one student who scored 50 is replaced by another who scored 90 , what will be the new average ?

The average of 10 numbers is 55. If each of the first 5 numbers is increased by 6 and each of the last 5 numbers is decreased by 4, what will be the new average ?

The average weight of 28 students is 65 kg . When the teacher's weight is included, the average becomes 67 kg . What is the weight of the teacher ?

In a school, there are three sections of students. The average marks of Section A are 72, of Section B are 68, and of Section C are 75. If Section A has 20 students, Section B has 15 students, and Section C has 25 students, find the overall average marks.

The average of 7 consecutive even numbers is 50 . If the next 5 consecutive even numbers are added, what is the new average?