एक वर्ग की20 छात्रों की औसत आयु 15.6 वर्ष है पाच छात्रों के आने के पश्चात वर्ग के सभी छात्रों की औसत आयु 15.4 वर्ष हो जाती हैं तो नए छात्रों की औसत आयु क्या है
prakashray492006:
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Answered by
1
Answer:
73 years
Step-by-step explanation:
sum of age of 20 students =20×15.6=312
Sum of age of new (20+5) students = 25 × 15.4 =385
Diffrence between them is 385-312=73
Hence the age of new students will be 73 years.
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Answered by
2
Answer:
14.60
Step-by-step explanation:
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