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1. 3 years ago, the average age of a family of 5 members was 17 years. A baby having been born the average age of the family is the same today. The present age of the baby is
- A. 1 year
- B. 1 year
- C. 1 year
- D. 1 year
Answer: Option C
Explanation:
ধরি, বাচ্চাটির বর্তমান বয়স x বছর
17 = 5 × ( 17 + 3) + x /6
102 = 100 + x
x = 102 - 100
x = 2
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