The average of 3 numbers is 17 and that of the first two numbers is 12. what is the third number
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Hi ,
Let a , b , c are three numbers ,
( a + b )/2 = 12
a + b = 24 ---( 1 )
( a + b + c )/3 = 17
a + b + c = 51 ---( 2 )
24 + c = 51 [ from ( 1 ) ]
c = 51 - 24
c = 27
Third number = c = 27
I hope this helps you.
: )
Let a , b , c are three numbers ,
( a + b )/2 = 12
a + b = 24 ---( 1 )
( a + b + c )/3 = 17
a + b + c = 51 ---( 2 )
24 + c = 51 [ from ( 1 ) ]
c = 51 - 24
c = 27
Third number = c = 27
I hope this helps you.
: )
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