document.write( "Question 313161: One car travels 8mph faster than another. While the slower one goes 14mi, the other goes 17.2mi. Find the speed of each car. \n" ); document.write( "
Algebra.Com's Answer #223909 by OmniMaestra(21)![]() ![]() You can put this solution on YOUR website! Rate X time = distance\r \n" ); document.write( "\n" ); document.write( "rt=d\r \n" ); document.write( "\n" ); document.write( "Start by noticing which of the three elements are the same. In this problem the two cars are going different speeds and travelling different distances but they are both travelling for the same amount of time. So rearrange the formula:\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "divide both sides by r: \n" ); document.write( " \n" ); document.write( "the new formula is \n" ); document.write( "\n" ); document.write( "Now lets work the problem:\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Now cross multiply: \n" ); document.write( "\n" ); document.write( "Distribute: \n" ); document.write( "\n" ); document.write( "Subtract 14x from both sides: \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "divide by 3.2 \n" ); document.write( "\n" ); document.write( " |