Averages Test -...

There are 3 classes having 20, 25 and 30 students respectively having average marks in an examination as 20, 25 and 30 respectively. If the three classes are represented by A, B and C and you have the following information about the three classes, answer the questions that follow:

A Æ Highest score 22, Lowest score 18

B Æ Highest score 31, Lowest score 23

C Æ Highest score 33, Lowest score 26

If five students are transferred from A to B.

What will happen to the average score of B?

Find wrong number in series: 23, 29, 31, 33, 41, 43, 47

The average age of a class of 30 students and a teacher reduces by 0.5 years if we exclude the teacher. If the initial average is 14 years, find the age of the class teacher. 

The average of a batsman after 25 innings was 56 runs per innings. If after the 26th inning his average increased by 2 runs, then what was his score in the 26 inning?

There are 3 classes having 20, 25 and 30 students respectively having average marks in an examination as 20, 25 and 30 respectively. If the three classes are represented by A, B and C and you have the following information about the three classes, answer the questions that follow:

A Æ Highest score 22, Lowest score 18

B Æ Highest score 31, Lowest score 23

C Æ Highest score 33, Lowest score 26

If five students are transferred from A to B.

What will happen to the average score of A?

 Read the following:

There are 3 classes having 20, 25 and 30 students respectively having average marks in an examination as 20, 25 and 30 respectively. If the three classes are represented by A, B and C and you have the following information about the three classes, answer the questions that follow:

A Æ Highest score 22, Lowest score 18

B Æ Highest score 31, Lowest score 23

C Æ Highest score 33, Lowest score 26

In a transfer of 5 students from A to C

What will happen to the average score of C?

The average of 7 consecutive numbers is E. If the next three numbers are also added, the average increases by

(IIFT 2013)

In 2001 there were 6 members in Barney’s family and their average age was 28 years. He got married between 2001 and 2004 and in 2004 there was an addition of a child in his family. In 2006, the average age of his family was 32 years. What is the present age (in 2006) of Barney’s wife (in years) is:

The weight of a metal piece as calculated by the average of 7 different experiments is 53.735 gm. The average of the first three experiments is 54.005 gm, of the fourth is 0.004 gm greater than the fifth, while the average of the sixth and seventh experiment was 0.010 gm less than the average of the first three. Find the weight of the body obtained by the fourth experiment.

One collective farm got an average harvest of 21 tons of wheat and another collective farm that had 12 acres of land less given to wheat, got 25 tons from a hectare. As a result, the second farm harvested 300 tons of wheat more than the first. How many tons of wheat did each farm harvest?

If the dates of birth, of four of them are prime numbers, then find the maximum average of the sum of their dates of birth. 

The average age of a group of persons going for a movie is 20 years. 10 new persons with an average age of 10 years join the group on the spot due to which the average of the group becomes 18 years. Find the number of persons initially going for the movie. 

Read the following:

There are 3 classes having 20, 25 and 30 students respectively having average marks in an examination as 20, 25 and 30 respectively. If the three classes are represented by A, B and C and you have the following information about the three classes, answer the questions that follow:

A Æ Highest score 22, Lowest score 18

B Æ Highest score 31, Lowest score 23

C Æ Highest score 33, Lowest score 26

In a transfer of 5 students from A to C

What will happen to the average score of A?

An alloy is prepared by mixing three metals A, B and C in the proportion 3: 4: 7 by volume. Weights of the same volume of the metals A, B and C are in the ratio 5: 2: 6. In 130 kg of the alloy, the weight, in kg, of the metal C is

 Read the following:

There are 3 classes having 20, 25 and 30 students respectively having average marks in an examination as 20, 25 and 30 respectively. If the three classes are represented by A, B and C and you have the following information about the three classes,

answer the questions that follow:

A Æ Highest score 22, Lowest score 18

B Æ Highest score 31, Lowest score 23

C Æ Highest score 33, Lowest score 26

In a transfer of 5 students from B to C

Which of these can be said about the average score of B?