document.write( "Question 1011507: May you please help me with this question?\r
\n" ); document.write( "\n" ); document.write( "The distance from Calgary to red deer is approximately 140 km. Some friends leave Calgary at noon, drive to red deer, have a half-hour break, and then return to Calgary. They arrive at 3:15 p.m. Traffic is busier on the return trip, so their average speed is 10km/h slower than on the outbound trip. What is the average speed of the round trip? \r
\n" ); document.write( "\n" ); document.write( "*hint* the textbook answer is 107 km/h \r
\n" ); document.write( "\n" ); document.write( "Steps/Calculations please?
\n" ); document.write( "

Algebra.Com's Answer #627183 by MathTherapy(10557)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "May you please help me with this question?\r
\n" ); document.write( "\n" ); document.write( "The distance from Calgary to red deer is approximately 140 km. Some friends leave Calgary at noon, drive to red deer, have a half-hour break, and then return to Calgary. They arrive at 3:15 p.m. Traffic is busier on the return trip, so their average speed is 10km/h slower than on the outbound trip. What is the average speed of the round trip? \r
\n" ); document.write( "\n" ); document.write( "*hint* the textbook answer is 107 km/h \r
\n" ); document.write( "\n" ); document.write( "Steps/Calculations please?
\n" ); document.write( "
Difference in speeds is irrelevant
\n" ); document.write( "Total distance: 2(140), or 280 km
\n" ); document.write( "Total time: \"2%263%2F4\" (\"3%261%2F4+-+1%2F2\") hours
\n" ); document.write( "Average speed: \"Total_distance%2FTotal_time\" -------> \"280%2F%282%263%2F4%29\"
\n" ); document.write( "This doesn't result in an AS of 107 km/h. You need to check why! \n" ); document.write( "
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