document.write( "Question 1134427: Normally it takes John 2.5 hours to drive from his house to his office. Due to yesterday's snowy weather he was driving 10 mph slower than usually, and it took 3 hours. How many miles is the office away from John's house? Thank you for solving this problem! :) \n" ); document.write( "
Algebra.Com's Answer #751823 by greenestamps(13200)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "You have received, so far, three responses to your question, showing similar algebraic solutions. Here is another quite different method that I like to use on this kind of problem. \n" ); document.write( "The ratio of times required is 2.5:3, or 5:6. \n" ); document.write( "Since the distances are the same, that means the ratio of the speeds is 6:5. \n" ); document.write( "If the ratio of the two speeds is 6:5 and the difference between the two speeds is 10mph, then the two speeds are 50mph and 60mph. \n" ); document.write( "The distance is then rate times time: 2.5 hours at 60mph = 150 miles; or 3 hours at 50mph = 150 miles. \n" ); document.write( " |