document.write( "Question 1070721: if the speed of a car is increased from 90km/h to 120km/h, the time is reduced by one hour to reach the destination. Calculate the distance between the two towns. \n" ); document.write( "
Algebra.Com's Answer #685729 by addingup(3677)    You can put this solution on YOUR website! 90x = 120(x-1) \n" ); document.write( "90x = 120x-120 \n" ); document.write( "-30x = -120 \n" ); document.write( "x = 4 hours travel time \n" ); document.write( "90*4 = 360km is the distance between the towns \n" ); document.write( "------------------------------ \n" ); document.write( "Check: \n" ); document.write( "If the speed is increased to 120km/h the time is reduced by 1 hour: \n" ); document.write( "120*(4-1) = 360 Correct, same distance. \n" ); document.write( " \n" ); document.write( "  |