document.write( "Question 1006967: This problem is really confusing me. I've been trying for a while but just don't know how to do it. Could you help?\r
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document.write( "A factory has an order for 23,500 paper clips. Machine A can make 1500 paper clips per hour while Machine B can make 2500 paper clips per hour. Machine A starts at 8:00 A.M. and Machine B starts at 1:00 P.M. At what time will the two machines complete the job? \n" );
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Algebra.Com's Answer #622990 by fractalier(6550)![]() ![]() You can put this solution on YOUR website! Imagine machine A working from 8 am until 1 pm. \n" ); document.write( "In those five hours, it produces 5(1500) = 7500 paper clips. \n" ); document.write( "That means there are 23,500 - 7,500 = 16,000 paper clips to go. \n" ); document.write( "When both machines run, they produce 1500+2500 = 4,000 paper clips an hour. \n" ); document.write( "Since they have to make 16,000 more paper clips, they work together for 16,000/4,000 = 4 more hours. \n" ); document.write( "They will be done at 5 pm. \n" ); document.write( " |