document.write( "Question 1153892: The youngest of 4 children has siblings who are 3, 5, and 8 years older than she is. If the average (arithmetic mean) age of the 4 siblings is 32, what is the age of the youngest sibling? \n" ); document.write( "

Algebra.Com's Answer #776215 by VFBundy(438) $\"\"$ $\"About$

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Age of youngest sibling = x
\n" ); document.write( "Age of 3rd oldest sibling = x + 3
\n" ); document.write( "Age of 2nd oldest sibling = x + 5
\n" ); document.write( "Age of oldest sibling = x + 8
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\n" ); document.write( "x + (x + 3) + (x + 5) + (x + 8) = 4(32)
\n" ); document.write( "
\n" ); document.write( "4x + 16 = 128
\n" ); document.write( "
\n" ); document.write( "4x = 112
\n" ); document.write( "
\n" ); document.write( "x = 28
\n" ); document.write( "
\n" ); document.write( "Age of youngest sibling = x = 28 \n" ); document.write( "

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