The average of 10 numbers is calculated as 15. It is discovered later on that while calculating the average one number, namely 36, was wrongly read as 26.The correct average is

The average of 10 numbers is calculated as 15. It is discovered later on that while calculating the average one number, namely 36, was wrongly read as 26.The correct average is
1). 20
2). 18
3). 16
4). 14

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1. The average age of four brothers is 12 years. If the age of their mother is also included, the average is increased by 5 years. The age of the mother (in years)is :

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3. A library has an average of 480 visitors on Sundays and 210 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is

4. What is the average of first 10 even numbers?

5. The average age of 120 members of a society is 60.7 years. By addition of 30 new members, the average age becomes 56.3 years. What is the average age (in years) of newly joined members?

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7. The average of five numbers is 66. If the average of first four numbers is 68, what is the value of the fifth number?

8. The average age of a class of 6 girls is x years. Four new girls having ages x - 2, x + 2, x + 4 and x + 6 joins the class. What is the new average age (in years) of the class?

9. The minimum temperature from Monday to Wednesday is 28°C and from Thursday to Sunday, it is 35°C. What is the average minimum temperature for the week?

10. The average of 18, 20, 32, 8, x, 9 and 13 is 17. What is the value of x?