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Average of 13 numbers is 78. Average of the first five numbers is 88 and the average of the last five number is 37.5% less than the average of the first five numbers. 6th and 7th number are in the ratio 9 ∶ 11, while 7th and 8th number are in the ratio 10 ∶ 9. What is the largest number among three numbers?
The average of five numbers is 27. If one number is excluded, the average becomes 25. What is the excluded number?
The average of five numbers is 30. If one number is excluded, then average becomes 31. What is the excluded number?
The average of five numbers is 27. If one number is excluded, the average becomes 25. The excluded number is ?
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 a ten numbers is 72.8. The average of the first six numbers is 88.5 and the average of the last five numbers is 64.4. If the 6th number is excluded, then what is the average of the remaining numbers?
The average of fifteen numbers is 60. The average of the first seven numbers is 63 and the average of next five numbers is 59. The last number is half of the 13th number and the 14th number is four more than the last number. Which of the following is/are correct? I. Average of the last three numbers is an integer II. Fourteenth number is divisible by 11 III. Average of 13th and 15th number is not 65
The average of thirteen numbers is 80. The average of the first five numbers is 74.5 and that of the next five numbers is 82.5. The 11th numbers is 6 more than the 12th number and the 12th number is 6 less than the 13th number. What is the average of the 11th and the 13th numbers?
The average of twenty-five numbers is 54. The average of the first 13 numbers and that of the last 13 numbers is 52.8 and 62.2, respectively. If the 13th number is excluded, then what is the average of the remaining numbers (correct to one decimal place)?
There are twelve numbers. The average of the first four numbers is 40.5 and the average of the last five numbers is 42.8. The sixth number is 0.2 less than the fifth number and 0.6 greater than the seventh number. If the average of the remaining twelve numbers is 43.2, then what is the average of the fifth and seventh numbers?