SOLUTION: Two cars leave town traveling in opposite directions. One travels at 80 km/h and the other at 96 km/h. In how many hours will they be 528 km apart?

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: Two cars leave town traveling in opposite directions. One travels at 80 km/h and the other at 96 km/h. In how many hours will they be 528 km apart?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 910205: Two cars leave town traveling in opposite directions. One travels at 80 km/h and the other at 96 km/h. In how many hours will they be 528 km apart?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Think of one car as standing still and
the other traveling at the sum of
their speeds
--------------------
+528+=+%28+80+%2B+96+%29%2At+
+t+=+528+%2F+176+
+t+=+3+
They will be 528 km apart in 3 hrs
----------------
check:
+d%5B1%5D+=+80t+
+d%5B1%5D+=+80%2A3+
+d%5B1%5D+=+240+
and
+d%5B2%5D+=+96t+
+d%5B2%5D+=+96%2A3+
+d%5B2%5D+=+288+
----------------
+d%5B1%5D+%2B+d%5B2%5D+=+240+%2B+288+
+d%5B1%5D+%2B+d%5B2%5D+=+528+
OK