document.write( "Question 917706: A man divides his total journey into three equal parts and decides to travel the three parts with speeds 60 km / hr , 24 km / hr and 45 km /hr . Find the average speed during the whole journey ? \n" ); document.write( "
Algebra.Com's Answer #556776 by josgarithmetic(39620)![]() ![]() ![]() You can put this solution on YOUR website! Imprecise problem statement. \n" ); document.write( "Is the trip cut into three equal parts by time, or by distance?\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Assuming the equal parts are by distance, let d be the distance of each part of the journey. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "Total time is \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The denominators: 2*2*3*5, 2*2*2*3, 3*3*5 \n" ); document.write( "LCD is 2*2*2*3*3*5=360\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Time is \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Total distance is \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Question is, what is average speed for the journey.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Decide if this is what you want. \n" ); document.write( " \n" ); document.write( " |