The average age of 5 children is 7 years which increased by 6 when the age of the father is included find the age of the father
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Step 1
The average age of 5 children = 7 years
(sum of the age of 5 children ) / 5 = 7
sum of the age of 5 children = 7 x 5 = 35
Step 2
when the average age of 5 children is included by father
= 7 +6 =13 years
(sum of the age of 5 children + father age ) / 6 = 13
35 + age of the father = 13 x 6 = 78
The age of the father = 78 - 35
= 43 years
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