document.write( "Question 1041510: Jasmine and Jesse drive from Abingdon to Boulia at a speed of 90km/h, and then from Boulia to Clarenvale at an average speed of 100km/h. If the total time taken for the journey from Abingdon to Clarenvale was two hours and the average speed for the entire journey was 96km/h, how far is it from Abingdon to Boulia. \r
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document.write( "I have figured out from the given average speed of the entire journey and time that the entire journey was 196 km in distance, although I may be wrong. How do you work this out. \n" );
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Algebra.Com's Answer #656485 by jorel555(1290)![]() ![]() ![]() You can put this solution on YOUR website! If the average speed over two hours was 96 kmh, then the total distance was 2*96=192 kilometers. Let n be the time from Boulia to Clarenvale. Then: \n" ); document.write( "100n+90(2-n)=192 \n" ); document.write( "10n+180=192 \n" ); document.write( "10n=12 \n" ); document.write( "n=1.2 \n" ); document.write( "2-n=.8 \n" ); document.write( ".8 * 90 kmh=72 kilometers. ☺☺☺☺ \n" ); document.write( " \n" ); document.write( " |