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Q.
The average age of seven persons sitting in a row facing east is 26 years. If the average age of the first three persons is 19 years and the average age of the last three persons is 32 years, then find the age of the person sitting in the middle of the row ?
A.
32 yrs
B.
29 yrs
C.
24 yrs
D.
27 yrs
View Answer
Correct choice: B
Explanation:
Total age seven persons = (26 x 7)years Total age of the first three persons and the last three persons are (19 x 3) years and (32 x 3) years respectively. Age of the person sitting in the middle of the row = 26 x 7 - 19 x 3 - 32 x 3 = 182 - 57 - 96 = 29 years.
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