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Practice Average – The average of a non-zero number and its square is 5 times the number. The number is:

Practice Average – The average of 5 consecutive numbers is n. If the next two numbers are also included, the average will:

Practice Average – The total population of a village is 5000. The number of males and females increases by 10% and 15% respectively and consequently the population of the village becomes 5600. what was the number of males in the village ?

Practice Average – The average age of 30 students is 9 years. If the age of their teacher is included, it becomes 10 years. The age of the teacher (in years) is :

Practice Average – Of the three numbers, second is twice the first and is also thrice the third. If the average of the three numbers is 44, the largest number is :

Practice Average – The average weight of 9 mangoes increases by 20 g if one of them weighing 120 g is replaced by another. The weight of the new mango is :

Practice Average – The average weight of 8 men is increased by 1.5 kg when one of the men who weighs 65 kg is replaced by a new man. The weight of the new man is :

Practice Average – The average age of a committee of eight members is 40 years. A member, aged 55 years retired and his place was taken by another member aged 39 years. The average age of the present committee is :

Practice Average – The average of six numbers is 30.If the average of first four is 25 and that of last three is 35, the fourth number is :

Practice Average – Out of four numbers ,the average of first three is 16 and that of the last three is 15 .If the last number is 18,the first number is :

Practice Average – The average of 11 numbers is 50. If the average of first 6 numbers is 49 and that of last 6 is 52.Find the 6th number.

Practice Average – Two-third of one-seventh of a number is 87.5% of 240. Whar is the number?

Practice Average – In seven given numbers,the average of first four numbers is 4 and that of last four numbers is also 4. If the average of these seven numbers is 3, the fourth number is?

Practice Average – The average age of a class of 39 students is 15 years .If the age of the teacher be included, then the average increases by 3 months .Find the age of the teacher.

Practice Average – Three years ago, the average age of a family of 5 members was 17 years. A baby having been born , the average age of the family is the same today. The present age of the baby is :