Problems Based on Application of Average in Everyday Life

Q.

Candidates of four schools appear in a mathematics test.The data is as follows:

$\begin{array}{ccc}\text{Schools}& \text{No. of Candidates}& \text{Average Score}\\ I& 60& 75\\ II& 48& 80\\ III& \text{Not Available}& 55\\ IV& 40& 50\end{array}$

If the average score of the candidates of all the four schools is 66, find the number of candidates who appeared from school III.

1. 50

2. 52

3. 49

4. 51

Q.

Class 8 students did a survey on birthdays. This chart shows the number of people whose birthdays fall on different months of the year.

A) How many people have their birthdays before July?

B) How many people have their birthdays in December if nobody has their birthdays in October and six people have their birthdays in November.

1. A) 19; B) 8

2. A) 12; B) 8

3. A) 19; B) 14

4. A) 12; B) 14

Q.

What is the average head count in 3 sections having 20 , 30 and 40 students respectively?

1. 35

2. 25

3. 30

4. 37.5

Q.

The monthly earnings of a tailor are :

₹ 20100 , ₹ 26500 , ₹ 28000 , ₹ 22500 and ₹ 25400 for first 5 months of the year.

What is his average earning ?

1. ₹ 24500

2. ₹ 25500

3. ₹ 24750

4. ₹ 25400

Q.

If you score 50 in maths and 76 in science, what is your average score in the 2 subjects?

1. 63

2. 60

3. 65

4. 68

Q.

Michael appeared in an examination and obtained the following marks out of 100 in respective subjects. Find his average mark.

$$\begin{array}{cc}\text{Name}& \text{Michael}\\ \text{Physics}& 87\\ \text{Chemistry}& 82\\ \text{Biology}& 82\\ \text{Mathematics}& 98\end{array}$$

1. 86.5
2. 87.25
3. 89
4. 88

Q.

40 students in a class donated ₹ 40 each to a relief fund. 50 students from another class donated ₹ 60 each.

Considering the contribution of both classes together, what was the average amount that each child donated?

1. ₹ 49.66

2. ₹ 50

3. ₹ 51.11

4. ₹ 53.33

Q.

The following are the marks obtained (out of 100) by students in Mathematics in a particular class :

82 , 76 , 90 , 64 , 80 , 96 , 100 , 52 , 68 and 88

What is the average mark obtained ?

1. 82

2. 76.5

3. 79.6

4. 84.2

Q.

What is the average amount of money spent by Satish if he has spent ₹ 250, ₹ 350, ₹ 300 , ₹ 450 and ₹ 400 in 5 days?

1. ₹ 375

2. ₹ 300

3. 333.33

4. ₹ 350

Q.

The average number of students in a government school in bangalore are 4600 and the average number in private schools are 5400.

If there are 6 private schools and 4 government schools in an area, what is the average number of students per school in that area?

1. 5800

2. 5080

3. 4800

4. 5250