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To find an average of quantities of the same kind is to add all the items together and then divide the sum by the number of items.
Average = sum of all items/ No. of items
\( Average = {sum \ of \ all \ items \over No. \ of \ items} \)
Practice these questions below using this formula.
To find an average of quantities of the same kind is to add all the items together and then divide the sum by the number of items.Average = sum of all items/ No. of items
\( Average = {sum \ of \ all \ items \over No. \ of \ items} \)
Practice these questions below using this formula.
Average = sum of all items/ No. of items
\( Average = {sum \ of \ all \ items \over No. \ of \ items} \)
Practice these questions below using this formula.
Click on Any Option to check right Answer and Explanation.
1 of 3
Q.1 The average weight of A, B and C is 45 kg, that of A and B is 40 kg and B and C is 43 kg. What is the weight of B?
- 17 kg
- 26 kg
- 20 kg
- 31 kg
2 of 3
Q.2 The average of following 5 numbers is 8, find the missing number in 7, 5, 3,12,?.
- 14
- 13
- 8
- 12
3 of 3
Q.3 The average of the first three numbers is double of the fourth number. if the average of all the four numbers is 12, find the 4th number.
- 16
- 20
- 18
- 48/7
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