document.write( "Question 923355: A car leaves town at 72 km/hr. An hour later, a second car leaves the same town, on the same road, traveling at 90 km/hr. In how many hours will the second car catch up to the first? \n" ); document.write( "
Algebra.Com's Answer #559990 by ewatrrr(24785)![]() ![]() You can put this solution on YOUR website! D = rt, Distances Equal \n" ); document.write( "72t = 90(t-1) \n" ); document.write( "90 = 18t \n" ); document.write( "90/18 = t = 5hr \n" ); document.write( " second car catch up to the first in 4hrs \n" ); document.write( " |