The average age of two children and their father is 17 years. The average age of the two children and their mother is 15 years. If the age of the father is 36 years what is the age of the mother.
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Step-by-step explanation:
average age of two children and their father = 17
sum of ages/3=17
sum of ages of two children and their father= 17*3= 51
age of the father = 36
ages of two children= 51 - 36 = 15
average age of the two children and their mother = 15 years
sum of ages/3=15
sum of ages of the two children and their mother = 15 * 3=45
age of mother = 45 - 15=30
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