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Practice Average Questions and Answers

In a family of 10, the men eat on average 70kg of food and women eat on an average 45kg of food. The men and women are equal in number. A woman joined the ...
In a family of 10, the men eat on average 65 kg of food and women eat on an average 45 kg of food. The men and women are equal in number. A woman joined th...
The average of 8 consecutive even numbers written in ascending order is 17. What is the average of the last three numbers, 36 and 53 ?
Average age of A, B and C is 20 years. Average age of B and C was 12 years when A was born. If B is 21 years old, then, find the age of C, 6 years hence.
Average weight of 5 students in a class increases by 4 kg when weight of teacher is also included. If sum of average weight of 5 students and weight of tea...
The average of twelve numbers is 45.5. The average of the first four numbers is 41.5 and that of the next five numbers is 48. The 10th number is 4 more tha...
A cricketer whose bowling average is 24.85, runs per wicket, takes 5 wickets for 52 runs and thereby decreases his average by 0.85. The number of wickets t...
The average temperature of Monday, Tuesday, Wednesday and Thursday is 50°. The average temperature for Tuesday, Wednesday, Thursday and Friday is 60°. If...
The average of n numbers is 66. If each of 54% of the numbers is increased by 13 and each of the remaining numbers is decreased by 12, then the new average...
The average of n numbers is 64. If each of 56% of the numbers is increased by 15 and each of the remaining numbers is decreased by 10, then the new average...
The average of n numbers is 62. If each of 55% of the numbers is increased by 18 and each of the remaining numbers is decreased by 12, then the new average...
The average of n numbers is 65. If each of 54% of the numbers is increased by 15 and each of the remaining numbers is decreased by 10, then the new average...
The average of n numbers is 60. If each of 55% of the numbers is increased by 12 and each of the remaining numbers is decreased by 12, then the new average...
Three natural numbers are given. If sum of average of any two numbers and the remaining third number is 56, 46 and 50 respectively, then find the sum of gi...
Out of 6 numbers, the sum of the first 5 numbers is 7 times the number. If their average is 136, then the 6th number is:
The average marks of 50 students in an examination was 65. It was later found that the marks of one student had been wrongly entered as 83 instead of 38. T...
In a class of 50 students there are 22 girls who scored an average of 35 marks in the test. What is the average marks of the boys if the class average is 4...
The average of 41 consecutive odd numbers is 49. What is the largest number.
A batsman scores 87 runs in the 21st match of his career. His average runs per match increases by 2. What was his average before the 21st match.
The base of a right pyramid is a square of side 10 cm. If its height is 10 cm. then the area (in cm2) of its lateral surface is:
The average score in Mathematics of 90 students of section A and B of class IX was 63. The number of students in A were 10 more than those in B. The averag...
The average expenditure of a man for the first five month is Rs.14000 and for the next seven months is Rs.12000. If he saves 17000 in that year then find h...
The average expenditure of a man for the first seven month is Rs.12000 and for the next five months is Rs.9000. If he saves 15000 in that year then find hi...
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 of 19 numbers is 15.The average of first 9 numbers are12 and that of the last 9 numbers are15. What will be the 19th number?
The average of 13 numbers is 10.The average of first 6 numbers is 8 and that of the last 6 numbers is 10. What will be the 13th number?
The average of 25 numbers is 22.The average of first 12 numbers is 14 and that of the last 12 numbers is 17. What will be the 25th number?
The average of 27 numbers is 20.The average of first 13 numbers is 15 and that of the last 13 numbers is 18. What will be the 27th number?
The average of 19 numbers is 16.The average of first 9 numbers is 13 and that of the last 9 numbers is 15. What will be the 19th number?
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:
The average age of a class of 27 girls is 18 years. If 3 new girls having average age of 8 years join the class, then the average age of the class becomes:
The average age of a class of 17 girls is 12 years. If 3 new girls having average age of 8 years join the class, then the average age of the class becomes:
The average age of three children is 20 years. If their ages are in the ratio 2:3:5. Find the age of the youngest child.
The average age of three children is 21 years. If their ages are in the ratio 3:5:6. Find the age of the youngest child.
The average age of three children is 25 years. If their ages are in the ratio 2:6:7. Find the age of the youngest child.
The average age of three children is 32 years. If their ages are in the ratio 3:6:7. Find the age of the youngest child.
The average of 9 numbers is 100. The average of the first 4 numbers is 65 and the average of the last 4 numbers is 40. What is the 5th number?
The average of 10 numbers is 102. The average of the first 5 numbers is 78 and the average of the last 4 numbers is 46. What is the 6th 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 of 15 numbers is 110. The average of the first 7 numbers is 98 and the average of the last 7 numbers is 62. What is the 8th number?

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