document.write( "Question 162161: Thirty students bought pennants for the football game. Plain pennants cost $4 each and fancy ones cost $8 each. If the total bill was $168, how many students bought the fancy pennants. \n" ); document.write( "

Algebra.Com's Answer #119573 by jojo14344(1513) $\"\"$ $\"About$

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\n" ); document.write( "Total Pennants sold: $\"PlainPennants%2BFancyPennants=30\"$ ----------> EQN 1
\n" ); document.write( "In EQN 1, we get,
\n" ); document.write( " $\"PP=30-FP\"$ --------------------------> EQN 2
\n" ); document.write( "Also,
\n" ); document.write( " $\"4PP%2B8FP=168\"$ -----------------------> EQN 3
\n" ); document.write( "Subst. EQN 2 in EQN 3:
\n" ); document.write( " $\"4%2830-FP%29%2B8FP=168\"$
\n" ); document.write( " $\"120-4FP%2B8FP=168\"$
\n" ); document.write( " $\"4FP=168-120=48\"$
\n" ); document.write( " $\"cross%284%29FP%2Fcross%284%29=cross%2848%2912%2Fcross%284%29\"$
\n" ); document.write( " $\"highlight%28FP=12%29\"$
\n" ); document.write( "Via EQN 2:
\n" ); document.write( " $\"PP=30-12\"$
\n" ); document.write( " $\"highlight%28PP=18%29\"$
\n" ); document.write( "In doubt? Go back EQN 3,
\n" ); document.write( " $\"4%2818%29%2B8%2812%29=168\"$
\n" ); document.write( " $\"72%2B96=168\"$
\n" ); document.write( " $\"168=168\"$
\n" ); document.write( "Thank you,
\n" ); document.write( "Jojo \n" ); document.write( "

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