A set contains ten numbers. The average of the first six numbers is (x - 1), and the average of the last three numbers is (x + 6). The average of the en...
The average age of 16 girls is 35 years. If the age of two more girls is added the average decreases by 3.5 years. What is the sum of the age of new girls?
Average runs scored by 11 players in a match were 35. Average runs scored by players except Virat and Rohit, was 26. Runs scored by Virat were 53 more t...
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...
Find the average of prime numbers between 20 and 40.
Average 20 numbers is ‘x’. If the average of first 12 numbers is 62.5 while average of last 5 numbers is 84.8 and 13th, 14th...
In a classroom, there are 24 male students and 16 female students. The male students have an average age of 16 years, while the female students average ...
The average age of three children is 16 years. If their ages are in the ratio 1:3:4. Find the age of the youngest child.
Average of 15 observations calculated by a student was 70 but when he again went through his observations he realised that he took value of three observ...
The combined average number of pens with persons ‘B’ and ‘C’ is 75% of the combined average number of pens with persons ‘A’ and ‘D’. The...
