The average age of a group of 50 students is 16 years. If 3 students whose ages are 18 years, 26 years, and _____ years are replaced by 3 new students w...
In an office, the average weight of women is 34 kg and the average weight of men is 30 kg. If the number of women is three times the number of men, what...
What is the average of the squares of the first 47 natural numbers?
The average value of the property of Anil, Sunil, and Vinay is Rs. 90 lacs. The value of the property of Anil is Rs. 30 lacs less than the value of the ...
Sum of ages of 55 team members is 1220 years. The average age of 20 of them is 19 years and the average age of another 15 of them is 20 years. Find the ...
The average score of a bowler in a series of matches is 28. His average increases by 2 when he takes 60 wickets in the next match. Find the total number...
The average of 12 numbers is 120. The average of the first 7 numbers is 75 and the average of the last 4 numbers is 53. What is the 8th number?
The average expenditure of a man for the first 9 month is Rs.5000 and for the next 3 months is Rs.8000. If he saves 12000 in that year then find his ave...
Of the four numbers, whose average is 75, the first is one-fourth of the sum of the last three. The first number is
The average age of a class of 20 girls is 14 years. If 5 new girls having average age of 9 years join the class, then the average age of the class becomes:
