If the average of x,y and z is 32 and the average of y and z is 27, what is the average of x and 2x.
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y+z/2=27
y+z=54
x+y+z/3=32
x+y+z=32×3
=96
therefore x=96-54
=42
Average x+2x=( 42+84)/2
=126/2
=63
y+z=54
x+y+z/3=32
x+y+z=32×3
=96
therefore x=96-54
=42
Average x+2x=( 42+84)/2
=126/2
=63
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