document.write( "Question 635474: Music Tour Costs: The Three Tenors are planning a \n" );
document.write( "nationwide tour. They will travel across the country \n" );
document.write( "by jet and give four concerts a week. They will sing in \n" );
document.write( "concert halls that hold an average of 5000 people \n" );
document.write( "each. Concert tickets average $18 per person, and \n" );
document.write( "most concerts are totally sold out. The advance expenses \n" );
document.write( "for each concert are $55,000. The cost of \n" );
document.write( "Meals, motels, jet travel, and support personnel totals \n" );
document.write( "$110,000 per week. How many weeks will the Three \n" );
document.write( "Tenors need to be on tour if each of them wants to \n" );
document.write( "earn $120,000 per year?\r \n" );
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