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Q.

The average age of the mother and six children is 15 years which is reduced by 3 years if the age of the mother is excluded. How old is the mother

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a

40

b

30

c

33

d

38

answer is C.

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Detailed Solution

Total age of  7 people =15×7=105  years

6 Children average age =(15−3)×6 = 72 years

∴  Age  of  the  mother=105−72=33  years

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