document.write( "Question 1157183: Working her way through school, Kathy works two part-time jobs for a total of 23 hours a week. Job A pays $5.80 per hour, and Job B pays $7.30 per hour. How many hours did she work at each job the week that she made $148.40? (Round to two decimal places if necessary.) \n" ); document.write( "

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\n" ); document.write( "Working her way through school, Kathy works two part-time jobs for a total of 23 hours a week. Job A pays $5.80 per hour, and Job B pays $7.30 per hour. How many hours did she work at each job the week that she made $148.40? (Round to two decimal places if necessary.)
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Let number of hours she worked for the $5.80 per-hour job be F
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document.write( "Then the number of hours she worked for the $7.30 per-hour job = 23 - F
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document.write( "We then get: 5.8F + 7.3(23 - F) = 148.4
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document.write( "5.8F + 167.9 - 7.3F = 148.4
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document.write( "5.8F - 7.3F = 148.4 - 167.9
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document.write( " - 1.5F = - 19.5
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document.write( "Number of hours she worked for the $5.80 per-hour job, or 
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document.write( "Do you think you can now find the number of hours for the other job? \n" );
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