Answer:
The speed of the slower car = 20 mph
The speed of the faster car = 25 mph
Explanation:
Let the speed of the slower car be s - 5
Let the speed of the other car be s
Two cars are 180 mi apart and travel toward each other along the same road. They meet in 4 hr.
Hence, the total speed = Distance/Time
= 180 miles/4hr
= 45 miles/hr or 45mph
Therefore:
s + s - 5 = 45 mph
2s - 5 = 45 mph
2s = 45 + 5
2s = 50
s = 50/2
s = 25 mph
The speed of the other car = s = 25mph
The speed of the slower car be s - 5
s - 5
= 25 - 5 = 20mph
Therefore,
The speed of the slower car = 20 mph
The speed of the faster car = 25 mph