Solved Questions on Average
1. Get the average of the following set of numbers: 16, 18, 20, 32, 44.
a) 17
b) 26
c) 76
d) 85
Answer: b) 26
Explanation: In order to determine the average of a given set of numbers, we first need to calculate the sum of all the numbers in the set. Once we have the sum, we can then divide it by the total number of values in the set to arrive at the average value.
(16 + 18 + 20 + 32 + 44)/5 = 26
2. What would be the average weight of a group of 5 people with weights of 120 pounds, 160 pounds, 170 pounds, 180 pounds and 190 pounds?
a) 120 pounds
b) 140 pounds
c) 164 pounds
d) 190 pounds
Answer: c) 164 pounds
Explanation: (120 + 160 + 170 + 180 + 190) / 5 = 164 pounds
3. Mr. Peter collected 125 pencils from students during the past 5 days. On the average, how many pencils did he collect each day?
a) 10
b) 15
c) 20
d) 25
Answer: d) 25
Explanation: Number of pencils collected by Mr. Peter = 125
Number of days = 5
Pencils collected each day = 125/5 = 25
4. The average consumption of wheat by a family is 60 kg in three months. If there are 15 members in the family, find the total consumption for three months.
a) 725 kg
b) 850 kg
c) 900 kg
d) 950 kg
Answer: c) 900 kg
Explanation: Average consumption of wheat = 60 kg
No. of members = 15
Total = Average × No. of members.
= 60 × 15
= 900 kg.
Therefore, the total consumption of wheat for 3 months is 900 kg.
5. The sum of the heights of students in a class is 1300 cm. If the average height of students is 65 cm, find the number of students in the class.
a) 12
b) 18
c) 20
d) 22
Answer: c) 20
Explanation: The sum of the heights of a class = 1300 cm
Average height = 65 cm
No. of students = Total ÷ Average
= 1300 ÷ 65
= 20
Therefore, the number of students in the class is 20.
Practice Questions on Average
1. If the average weight of five students is 50 kg, what is the total weight of all the students?
a) 250 kg
b) 200 kg
c) 125 kg
d) 100 kg
Answer: a) 250
2. If a student scored 80, 85, 90, 95 and 100 in his five exams, what is his average score?
a) 89
b) 90
c) 95
d) 98
Answer: b) 90
3. A store owner wants to find out the average price of the items he sells. He finds that the prices of the first 10 items are $20, $25, $30, $35, $40, $45, $50, $55, $60 and $65. What is the average price of the items?
a) $27.45
b) $35.8
c) $42.5
d) $55.3
Answer: c) $42.5
4. A group of 15 students went on a trip and spent a total of $1275. What was the average cost per student?
a) $85
b) $95
c) $105
d) $115
Answer: a) $85
5. A farmer has a total of 60 apples and he wants to divide them equally among 12 workers. What is the average number of apples each worker will receive?
a) 5
b) 6
c) 7
d) 8
Answer: a) 5
6. The goal scored by a team in 6 matches is 1, 2, 5, 3, 4 and 0. Find the average score of the team.
a) 2.5
b) 3.5
c) 3.8
d) 4.9
Answer: a) 2.5
7. What is the average of first 5 odd numbers?
a) 2
b) 5
c) 7
d) 9
Answer: b) 5
8. What is the average of first ten natural numbers?
a) 2.5
b) 3.5
c) 4.5
d) 5.5
Answer: d) 5.5
9. What is the average of first 5 prime numbers?
a) 5
b) 5.6
c) 6.2
d) 7.8
Answer: b) 5.6
10. What is the average of first five multiples of 3?
a) 3
b) 6
c) 9
d) 12
Answer: c) 9
