Math, asked by Bablu1234, 11 months ago

the average of three number is 12 . the 2 numbers are 15 and 10 ,the third number is

Answers

Answered by Meghnateesta

total of 3 numbers is 36 so third number is 15+ 10+x=36 so 25 +x=36 so x =

36-25 i.e 11

Meghnateesta: mark this as brainleast

Answered by bhavikachopra50

(a+b+c)/3=average

(15+10+c)/3=12

(25+c)/3=12

25+c=36

c=36-25=11

Let us check

(a+b+c)/3=average

(25+10+11)/3=12

12=12

LHS=RHS

Therefore,our answer us correct

Bablu1234: ok

bhavikachopra50: No my answer is 11 pls check again

Bablu1234: bye

bhavikachopra50: Bye

Bablu1234: ok i will check now

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Bablu1234: average age of 5 boys is 13 year one more boys on them and the average age becomes 12 year the age of the boy who joins last is

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