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प्रश्न
The average age of 5 members of a family is 20 years. The youngest member of the family is 4 years old. The average age of all the members of the family excluding the youngest member is
विकल्प
24
30
35
40
MCQ
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उत्तर
24
Explanation:
Total age of 5 members = 5 x 20 = 100 yr
∴ New average = `(100-4)/4 = 96/4 = 24`
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