Averages Questions

The average age of a husband, his wife and their child $4$ years ago was $30\text{years}$. The average age of the wife and the child $6$ years ago was $22\text{years}$. Find the present age of the husband.

The average of six numbers is $12$. The average of two of them is $6.5$, while the average of the other two is $4.5$. What is the average of the remaining two numbers?

A shopkeeper sells each pen for ₹$12$, each notebook for ₹$25$ and each notebook cover for ₹$8$. If he sells $5$ pens, $8$ notebooks and $16$ notebook covers, what will be the average price (in ₹) per item (rounded off to two decimal places)?

In a company, the total customer calls on Monday, Wednesday and Friday are 15,500 and the total calls on Tuesday and Thursday are 12,500. The average calls on Saturday and Sunday are 7,000. What are the average calls per day in a week?

The ratio of marks obtained by two students A and B is 6 ∶ 5. The sum of their marks is 440. If the average of their percentage marks is 55, then the maximum marks for which the examination was conducted were:

The average of the ages of A and B is 25 years, that of B and C is 30 years and that of C and A is 32 years. The age of C (in years) is:

What is the average of all the numbers between 7 and 56 that are divisible by 6?

The average of n numbers is 42. If 60% of the numbers are increased by 5 each and the remaining numbers are decreased by 10 each. then what will be the average of the numbers so obtained?

The average age of 26 students in a class is 15 years. If teacher's age is included in it, then the average will increase by one. What is the teacher's age (in years)?

The average age of 66
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% of the number of children in a group is 13 years. The average age of all the children in the group is 14.5 years. What is the average age (in years) of the remaining children?

Study the following table, which shows the number of units of a product manufactured and sold by a company in five years, and answer the question.YearsNumber of units Manufactured (in thousands)Number of units Sold (in thousands)20133503202014375315201530028020164504232017420360In which year the number of units of the product sold is $19000$ less than the average number of units manufactured per year?

The average age of $24$ students in a class is $15.5$ years. The age of their teacher is $28$ years more than the average of all twenty-five. What is the age of the teacher in years?

The average of $10$ numbers is $41$. The average of first $3$ numbers is $39.4$ and the average of last $4$ numbers is $43.5$. $4^{\text{th}}$ number is $2$ more than $5^{\text{th}}$ number and $0.2$ more than $6^{\text{th}}$ number. What is the average of the $4^{\text{th}}$ and $6^{\text{th}}$ numbers?

The average age of the Indian cricket team playing in the Capetown test match is 28 years. If the average age of 10 players except the Captain is 27.8 years, then the age of the Captain is:

The average of 50 numbers is 36. If two numbers, namely 63 and 65 are discarded, the average of the remaining numbers is (Correct to two decimal places):

The average marks obtained by a class in an examination were calculated as $30.8$. However, while checking the marks entered, the teacher found that the marks of one student were entered incorrectly as $24$ instead of $42$. After correcting the marks, the average becomes $31.4$. How many students does the class have?