The average weight of 3 students is 45 kg. if one more student weighing 51 kg. What’s the new average weight after the student joins?
The average weight of 3 students is 45 kg. if one more student weighing 51 kg. What’s the new average weight after the student joins?
तीन छात्रों का औसत वजन 45 किलोग्राम हैं। अगर एक और छात्र जिसका वजन 51 किलोग्राम है, शामिल होता है, तो छात्र के शामिल होने के बाद नया औसत वजन क्या होगा?
Detailed Solution & Logic
Correct Answer:
46.5 kg
Solution
3 student average weight / छात्र कुल वजन= 45 kg
total weight $ 45 \times 3 =135 $
one more student weighing 51 kg
तीनो छात्र का कुल वजन total weight of three students + शामिल हुए छात्र का वजन Weight of the student attending 135 +51= 186 kg
Now only students number अब केवल छात्रों की संख्या = 4
new average नया औसत = $ \frac{186}{4}$ 46.5 kg
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