document.write( "Question 154523: Lita Vance is driving to Lake Tahoe a distance of 662 miles. If she drices at 55 mph. for 5 hours, at what speed must she drive to complete the total trip in 14 hours? \n" ); document.write( "
Algebra.Com's Answer #113771 by BrittanyM(80)![]() ![]() ![]() You can put this solution on YOUR website! She has already driven for five hours, so the remaining distance of her trip must be completed in nine hours.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "To find this, we can subtract the distance that she has already travelled from the total distance of the trip:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "55mph * 5hrs = 275miles \n" ); document.write( "And the total distance is 662miles, so: \n" ); document.write( "662mi - 275mi = 387\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "We know that she wants to make the trip in a total of fourteen hours, but she has already used five hours. So there are nine hours heft for her to complete 387 miles.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "Her speed for the remainder of the trip must be 43mph. \n" ); document.write( " |