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The average age of mother and her six children is 12 years, which is reduced by 5 years if the age of the mother is excluded. The age of the mother (in years) is :
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- 50
- 40
- 48
- 42
- 50
Correct Option: D
Given that , The average age of mother and her six children = 12 years
⇒ Total age of ( Mother + 6 children ) = 12 × 7 = 84 years
On excluding mother , The average age of six children = 7 years ( = 12 - 5 )
⇒ Total gge of 6 children = 6 × 7 = 42 years
∴ Mother’s age ⇒ 84 – 42 = 42 years
