the average of three number is 12 . the 2 numbers are 15 and 10 ,the third number is
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Answered by
15
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
36-25 i.e 11
Meghnateesta:
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Answered by
5
(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
ok
No my answer is 11 pls check again
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ok i will check now
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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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