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ANURUDH KUMAR

· started a discussion

· 1 Months ago

question no 59 (Question:125400.0)

20 year 6 month hona chaiye sir

Question:
The average age of 40 students of a class is 18 years. When 20 new students are admitted to the same class, the average age of the students of the class is increased by 6 months. The average age of newly admitted students is:
Options:
A) 19 years
B) 19 years 6 months
C) 20 years
D) 20 years 6 months
E) None of these
Solution:
Ans: (b) Total age of 40 students = 40 × 18 = 720 years.

Total age of 60 students after new came = 60 × 18.5 years = 1110 years.

Total age of 20 new students = 1110 - 720 = 390 years.

Average age of 20 students = \(\cfrac{390}{20}\) = 19.5 years.

Knowledge Expert

· commented

· 1 Months ago

Dear student
Given answer is correct.
Please read the Question carefully.


Best wishes
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