Average = Sum of all Numbers / Total Numbers

Example22.Find the average of 32, 36 and 46

Answer: Sum of all numbers= 32+36+46 = 114

Total Numbers = 3

Average = 114/3 = 38

Example23. Age of Ramesh, Dinesh and Ram is 32 years, 36 years and 46 years. What is their average age?

Answer: Sum of their age is = 32+36+46=114

Their total count = 3

Average = 114/3 = 38 years.

Example24. What is the average of first 4 even numbers?

Answer: First 4 even numbers are: 2,4,6,8

Their total: 2+4+6+8=20

Total count: 4

Average=20/4 = 5

Example25.What is the average of first 4 odd numbers?

Answer: First 4 odd numbers are: 1,3,5,7

Their total: 1+3+5+7=16

Total count: 4

Average=16/4 = 4

Example26.Average income of a person for first 7 months is 110 Rs. and for next 5 months is 86 Rs.

What is his average income for full year?

Answer:100 Rs.

Average income = (Total income / Number of months)

Total Income = Average income X Number of months

Total income for first 7 months = 110 X 7 = 770

Total income for next 5 months = 86 X 5 = 430

Total income for 12 months = 770+430 = 1200

Average income for 12 months = 1200/12 = 100 Rs.

Their total: 2+4+6+8=20

Total count: 4

Average=20/4 = 5