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The average age of the mother and her six children is 12 years which is reduced by 5 years if the age of the mother is excluded. How old is the mother?1. 402. 413. 424. 43 |
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Answer» Correct Answer - Option 3 : 42 Given: Average age of mother and 6 children = 12 years When mother is excluded, average is reduced by 5 years Formula used: Average =(Sum of values)/(Total number of values) Calculation: Average when mother is excluded = 12 – 5 = 7 years Sum of ages of mother and her 6 children = 12 × 7 = 84 years Sum of ages of 6 children = 7 × 6 = 42 years Age of mother = 84 – 42 = 42 years ∴ The age of mother is 42 years. |
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