Question 876993
 two cars leave the same city at the same time.Both traveling opposite directions. One car is traveling 5 miles faster than the other. After 3 hours both two cars are 393 miles apart. Find the speed of both cars.
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"Both traveling opposite directions."  ??  Think about that.
Try "traveling in opposite directions."
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If they go in opposite directions, their speeds are added.
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d  = r*t
r = d/t = 393/3
The sum of their speeds = 131 mi/hr
The difference is 5 mi/hr
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r1 + r2 = 131
r1 - r2 = 5
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