SOLUTION: two cars start at the same time from 2 hours 945km. apart and meet in 7 hours. one car travels 5kph faster than the other.what is the rate of the faster car?

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Question 618943: two cars start at the same time from 2 hours 945km. apart and meet in 7 hours. one car travels 5kph faster than the other.what is the rate of the faster car?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
They are approaching each other at the sum of
their speeds
Let +s+ = the speed of the slower car in km/hr
+s+%2B+5+ = the speed of the faster car in km/hr
+945+=+%28+s+%2B+s+%2B+5+%29%2A7+
+945+=+14s+%2B+35+
+14s+=+910+
+s+=+65+
+s+%2B+5+=+70+
The faster car's rate is 70 km/hr