document.write( "Question 207415: Sue heads due west from Dry Gulch on U.S. 65 at a steady speed of 55 mph (miles per hour) while Don heads due east from Wet Hollow (which is 840 miles west of Dry Gulch) on the same hi-way at 65 mph both start at the same time. After what time did they cross paths.
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document.write( "I would like this solved with respect to time. That is Time traveled by Don to crossing point is equal to time traveled by Sue to crossing point.
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document.write( "Time Traveled (Don) = Time Traveled (Sue). I can solve it by using Dist traveled but would like to see this worked out via time if it can be. \n" );
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Algebra.Com's Answer #156836 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Sue heads due west from Dry Gulch on U.S. 65 at a steady speed of 55 mph (miles per hour) while Don heads due east from Wet Hollow (which is 840 miles west of Dry Gulch) on the same hi-way at 65 mph both start at the same time. After what time did they cross paths. \n" ); document.write( "I would like this solved with respect to time. That is Time traveled by Don to crossing point is equal to time traveled by Sue to crossing point. \n" ); document.write( "Time Traveled (Don) = Time Traveled (Sue). I can solve it by using Dist traveled but would like to see this worked out via time if it can be. \n" ); document.write( "-------------- \n" ); document.write( "They're approaching, so their speeds are added. 55+65 = 120 mph. \n" ); document.write( "840/120 = 7 hours. \n" ); document.write( "----------------- \n" ); document.write( "s = 65 mph (Sue's speed) \n" ); document.write( "n = 55 mph (Don's speed) \n" ); document.write( "d = rt \n" ); document.write( "65t + 55t = 840 \n" ); document.write( "120t = 840 \n" ); document.write( "t = 7 hours \n" ); document.write( " |