The distance between two towns is 380 km. At the same moment, a passenger car and a truck start moving towards each other from different towns. They meet 4 hours later. If the car drives 5 km/hr faster than the truck, what are their speeds? Choose the correct choice from the following answers.
A) 33
B) 45
C) 37
D) 36
E) 19
The main idea used in this kind of problems is that the distance equals speed multiplied by time S=V⋅tS=V⋅t   V (km/hr)	t (hr)	S (km)   Car	x + 5	4	4(x +5)   Truck	X	4	4x   4(x+5)+4x=3804(x+5)+4x=380   4x+4x=380−204x+4x=380−20   8x=3608x=360   x=3608x=3608   x=45x=45   Therefore the truck's speed is 45 km/hr, and the car's speed is 50 km/hr.   Answer:45
<result>B</result>
The distance between two towns is 380 km. At the same moment, a passenger car and a truck start moving towards each other from different towns. They meet 4 hours later. If the car drives 5 km/hr faster than the truck, what are their speeds?