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The correct answer is C
The average age of a group of 10 students is 20 years. Two persons of age 25 years and 20 years, left the group and 2 persons of age 26 years and...
Determine the average marks achieved by six additional aspirants if the average score of 24 aspirants in a mock test is 67. Adding the marks of these si...
The average of 18 numbers is 12. If each number is increased by 2, what will be the mean of the new set of numbers?
The annual production of an article fluctuates. It consistently rises by 25% for two consecutive years, followed by a 20% decline in the third year. In ...
The average score obtained by 27 students in a class test is 68 marks. The top place was shared by 3 people who got the same score. If the lowest score ...
Average 20 numbers is ‘x’. If the average of first 12 numbers is 64.5 while average of last 5 numbers is 86.6 and 13th, 14th a...
The average number of books on history, polity and geography in a library is 150, and the average number of books on history and geography is 140. If th...
A class of 39 students has an average test score of 24. When the score of the topper is added, the average score of the group increases to 24.25. What ...
The average weight of 10 books is 5 kg. If 6 new books are added, the new average increases by 3 kg. What will be the average weight of the 6 new books?
Consider three positive numbers that form a ratio of 2:3:4. If the sum of the squares of these numbers is 2349, what is the average of the largest and t...
