document.write( "Question 1031941: Gilda walks to the train station. If she walks at the rate of 3 mph, she misses her train by 7 minutes. However, if she walks at the rate of 4 mph, she reaches the station 5 minutes before the arrival of the train. Find the distance Gilda walks to the station. David knew he made a mistake when he calculated that Gilda walks 123 miles to the station.
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document.write( "Read through David's calculations:
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document.write( "Using d = rt, the distance is the same, but the rate and time are different.
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document.write( "If Gilda misses the train, it means the time t needs 7 more minutes so d = 3(t + 7).
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document.write( "If she gets to the station 5 minutes early means the time t can be 5 minutes less so d = 4(t - 5).
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document.write( "3(t + 7) = 4(t - 5)
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document.write( "3t + 21 = 4t - 20
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document.write( "t = 41
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document.write( "d = rt, so d = 3(41) = 123
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document.write( "Find David's mistake in his calculations. Explain his mistake and include the correct calculations and solutions in your answer.
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Algebra.Com's Answer #646645 by MathTherapy(10552)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Gilda walks to the train station. If she walks at the rate of 3 mph, she misses her train by 7 minutes. However, if she walks at the rate of 4 mph, she reaches the station 5 minutes before the arrival of the train. Find the distance Gilda walks to the station. David knew he made a mistake when he calculated that Gilda walks 123 miles to the station. \n" ); document.write( "Read through David's calculations: \n" ); document.write( "Using d = rt, the distance is the same, but the rate and time are different. \n" ); document.write( "If Gilda misses the train, it means the time t needs 7 more minutes so d = 3(t + 7). \n" ); document.write( "If she gets to the station 5 minutes early means the time t can be 5 minutes less so d = 4(t - 5). \n" ); document.write( "3(t + 7) = 4(t - 5) \n" ); document.write( "3t + 21 = 4t - 20 \n" ); document.write( "t = 41 \n" ); document.write( "d = rt, so d = 3(41) = 123 \n" ); document.write( "Find David's mistake in his calculations. Explain his mistake and include the correct calculations and solutions in your answer.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "DUPLICATE PROBLEM. See # 1029838 \n" ); document.write( " I worked it out then and I did get distance to be: 2.4 km also.\n" ); document.write( " |