document.write( "Question 1061326: If my driver is driving my car to school which is 5 k
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document.write( "away from home at 40 km/hr (because you’re in the
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document.write( "car) then returns home at 100 km/hr, what is his
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document.write( "average speed? \n" );
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Algebra.Com's Answer #676220 by jorel555(1290)![]() ![]() ![]() You can put this solution on YOUR website! 5k @ 40 kph=1/8th hours=5/40ths hours \n" ); document.write( "5k @ 100 kph=1/20th hours=2/40ths hours \n" ); document.write( "Your total travel time is 7/40ths of an hour to go 10 km. So the average for the whole trip is 10/(7/40) kph, or 57.1429 kph. ☺☺☺☺ \n" ); document.write( " |