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Average age of 3 children born at intervals of 2 years is 8. How old is the eldest child?
The average monthly fee of all 45 students in a class is Rs. 9,500. After an increment, the new monthly average fee of each student becomes Rs. (9500 + ...
The average of 27 numbers is 25.The average of first 13 numbers is 16 and that of the last 13 numbers is 19. What will be the 27th number?
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...
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...
The average weight of 15 boys in a group is 48 kg. If the collective weight of 12 girls in another group is 25% lower than that of the boys, what is the...
A kiosk has different brands of chips. 70% of the stores' sales are from selling potato chips. 30% of the sales are from 3 other chips and wafers. Every...
The average of five even numbers is 36. If we replace two of these even numbers, 82 and 88, with a single even number X, the new average decreases by 4....
The average mark obtained by Khushi in four papers was 51, and in the fifth paper, she obtained 56 marks. Find his new average in all five papers.
Average weight of a team of 10 persons is 30 kg. When one more person joins the team, the average weight of the team increases by 3 kg. Find the weight ...