SOLUTION: Two cars leave Naga City and travel opposite direction. Car A is average 12 kph less than Car B. After 3 hours, they are 396 km apart. What is the average rate of each car?

Question 1062914: Two cars leave Naga City and travel opposite direction. Car A is average 12 kph less than Car B. After 3 hours, they are 396 km apart. What is the average rate of each car?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Think of this as one of the cars standing
still and the other traveling at the sum of their speeds.
Let = speed of car B in km/hr
= speed of car A in km/hr
------------------------------------------

and

-------------------
Car B's average rate is 60 km/hr
Car A's rate is 72 km/hr
----------------------------
check:

km
and

and

km
OK

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