The average age of group of 24 students is 15 year. If a student aged 9 years leaves the group, what will be the new average age?
The average age of group of 24 students is 15 year. If a student aged 9 years leaves the group, what will be the new average age?
24 छात्रों के एक समूह की औसत आयु 15 वर्ष हैं। यदि 9 वर्ष की आयु का एक छात्र समूह छोड़ देता है, तो नई औसत आयु क्या होगी?
Detailed Solution & Logic
Correct Answer:
15.26
Average / औसत आयु = 15 years
Number of Student छात्रों = 24
कुल आयु = $ 24 \times 15 $ = 360 years
9 years student leaves the group
9 साल का छात्र ग्रुप छोड़ देता है
360 - 9 = 351
new number of student / छात्र की नई संख्या
24 - 1 = 23
New average age (नया औसत) आयु =$ \frac {351}{23} $= 15.26
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