The average age of a family of 6 members is 25 years. After a 45- yers old member leves the family, what is the average age ( in years) of the family?

A 22
B 21
C 20
D 19

Correct Answer: 21

6 জন সদস্যের সয়সের সমষ্টি = 6 × 25 = 150 বছর 5 বছর সদস্যের বয়সের সমষ্টি = 150 - 45 = 105 বছর ∴ বর্তমান বয়সের গড় = 105 = 21 বছর
Bissoy MCQ
#গণিত #গড় (Average) #Combined Bank (সমন্বিত ব্যাংক) #সমন্বিত ৮ ব্যাংক | অফিসার | 21-01-2022

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