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Questions below followed by three quantities. Find the relationship between them. Quantity I: In a class with a certain number of students if a teacher weighing 78 kg is added, then average weight of class is increased by 2 kg. If one more teacher weighing 66 kg is added, then the average weight of the class increases by 3.5 kg over the original average. What is the original average weight (in kg) of the class? Quantity II: The average age of 16 students and their teacher's age is 16 years. If the teacher's age is excluded, the average reduces by 2. What is the teacher's age? Quantity III: Average weight of three friends A, B and C is 46 kg. Another person D joins the group and now the average is 45 kg. If another person E whose weight is 6 kg more than D, joins the group replacing A, then average weight of B, C, D and E becomes 47 kg. What is the weight of A (in kg)?
The average of 28 numbers is 77. The average of first 14 numbers is 74 and the average of last 15 numbers is 84. If the 14th number is excluded, then what is the average of remaining numbers? (correct to one decimal places)
The average of 37 numbers is 80. The average of the first 19 numbers is 75 and the average of the last 19 numbers is 84. If the 19th number is excluded, what is the average of the remaining numbers (approximate to one decimal place)?
The average of 29 numbers is 45. The average of the first 15 numbers is 38 and the average of the last 15 numbers is 53. If the 15th number is excluded, then what is the average of the remaining numbers? (Correct to one decimal place)
The average of 46 numbers is 50.5. The average of the first 25 numbers is 45 and that of the last 18 numbers is 56. The 28th number is 67. If the 26th and 27th numbers are excluded, then what is the average of the remaining numbers?
The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is :
The average of six numbers is 36. If one number is excluded, the average becomes 37. What is the excluded number?
The average of five numbers is 27. If one number is excluded, the average becomes 25. What is the excluded number?
The average of 6 numbers is 18. If one number is excluded, the average becomes 17. What is the excluded number?
The average of 17 numbers is 6. If one number is excluded, the average becomes 5. What is the excluded number?