The average age of three children in a family is 9 years.if the age of parents be included the average age increased by 10 years.find the average age of parents
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Sum of the ages of three children 9*3 = 27
Sum of the ages of three children and parents = 5*19 = 95
Parents age 95-27 = 68
Average 68/2 = 34 yrs
Sum of the ages of three children and parents = 5*19 = 95
Parents age 95-27 = 68
Average 68/2 = 34 yrs
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