document.write( "Question 59124: Bob paid 3 less than Tim for his lunch at a local pizza parlor. Together they spent $7.80. How much did Bob spend for his lunch? \r
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document.write( "a. $2.40
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document.write( "b. $4.50
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document.write( "c. $4.80
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document.write( "d. $5.40
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document.write( "e. $8.40 \r
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Algebra.Com's Answer #40541 by funmath(2933)![]() ![]() ![]() You can put this solution on YOUR website! Bob paid 3 less than Tim for his lunch at a local pizza parlor. Together they spent $7.80. How much did Bob spend for his lunch? \r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "b. $4.50 \n" ); document.write( "c. $4.80 \n" ); document.write( "d. $5.40 \n" ); document.write( "e. $8.40 \r \n" ); document.write( "\n" ); document.write( ": \n" ); document.write( "Let Tim pay:x \n" ); document.write( "Then Bob paid:x-3 \n" ); document.write( "Together:7.80 \n" ); document.write( "(x)+(x-3)=7.80 \n" ); document.write( "2x-3=7.80 \n" ); document.write( "2x-3+3=7.80+3 \n" ); document.write( "2x=10.80 \n" ); document.write( "2x/2=10.80/2 \n" ); document.write( "x=5.40 \n" ); document.write( "Tim paid: x=$5.40 \n" ); document.write( "Bob paid: x-3=$5.40-$3.00=$2.40 (a) \n" ); document.write( "Check, if we add what they paid do we get $7.80? \n" ); document.write( "$5.40+$2.40=$7.80 \n" ); document.write( "$7.80=$7.80 Looks good. \n" ); document.write( "Happy Calculating!!! \n" ); document.write( " |