The average of 6 numbers in 25 .If 3 more numbers ,with an average of 22 are added to these numbers,what will be the average of the combined 9 numbers ?

A 24

B 25

C 26

D 28

Solution

Correct Answer: Option A

6 টি সংখ্যার সমষ্টি 25×6=150
3 টি সংখ্যার সমষ্টি 22×3=66
-----------------------------------
অতএব , 9 "     "   =216 টি
গড় =216/9=24

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