In a family of 6, the average age is 25 years. If the youngest member is 5 years old, what was the average age of the family just before his birth? 6 सदस्यों के परिवार में औसत आयु 25 वर्ष है। यदि सबसे छोटा सदस्य 5 वर्ष का है, तो उसके जन्म से ठीक पहले परिवार की औसत आयु क्या थी?
A
20 years (20 वर्ष)
B
24 years (24 वर्ष)
C
25 years (25 वर्ष)
D
30 years (30 वर्ष)
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Correct Answer 24 years
Explanation
Total age = 150. 5 years ago, total age = 150 - (6 * 5) = 120. Number of members then = 5. Average = 120 / 5 = 24.