document.write( "Question 967791: A motorist travels at an average speed of 110km/h for 2 hours. He then travels at an average speed of 98km/h for 2.5 hours. Calculate his average speed over the whole distance? \n" ); document.write( "
Algebra.Com's Answer #591532 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! D=RT \n" ); document.write( "D=100*2 \n" ); document.write( "D=200 \n" ); document.write( "D=98*2.5 \n" ); document.write( "D=245 \n" ); document.write( "200+245=R(2+2.5) \n" ); document.write( "445=4.5R \n" ); document.write( "R=445/4.5 \n" ); document.write( "R=98.89 KPH. ANS. \n" ); document.write( " |