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प्रश्न
The average age of ten persons learning yoga is 32 yrs. When the age of their instructor is added, the average age becomes 34 yrs. The age of their instructor is
विकल्प
54
52
46
56
MCQ
उत्तर
54
Explanation:
The average age of ten-person learning yoga = 32 years
The average age of 11 person including instructor = 34 years
Age of instructor
11 × 34 − 10 × 32
⇒ 374 − 320 = 54 years
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