document.write( "Question 999089: Bob makes $4/hr more than Al, but only half of what Fred makes. Bob and Al work together for
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Algebra.Com's Answer #616826 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "Bob makes $4/hr more than Al, but only half of what Fred makes. Bob and Al work together for
\n" ); document.write( "10 hours and still make $12 less than Fred makes in 9 hours. What does Fred make per hour?
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Let Fred’s per-hour pay be F
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document.write( "Then Bob makes: , or  per hour
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document.write( "Also, Al makes:  per hour
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document.write( "We then get:  
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document.write( "5F + 5F – 40 = 9F – 12
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document.write( "5F + 5F – 9F = - 12 + 40
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document.write( "10F – 9F = 28
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document.write( "F, or amount Fred makes, per hour =  \n" );
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