Algebra
posted by Lora .
Two cars start at the same point at Alexandria, verginia, and travel 2
opposite directions. One car travels 5 miles per hour faster than the
other car. After 4 hours, the two cars are 420 miles apart. Find the
speed of each car.

V1 = = X mi/h
V2 = (x+5) mi/h.
d = 4*X + 4*(X+5) = 420
4x + 4x+20 = 420
8x = 42020 = 400
X = 50 mi/h.
X+5 = 55 mi/h.
Respond to this Question
Similar Questions

algebra
At 9AM, two cars started from the same town and traveled north on the same road. One car averaged 45 miles per hour, and the other car averaged 40 miles per hour. In how many hours were the cars 30 miles apart? 
speeddistancetime
Please help me with this problem. Two cars started from the same point and traveled on a straight course in opposite directions for exactly 2 hours, at which time they were 208 miles apart. If one car traveled, on average, 8 miles … 
Math
Two cars start from the same place and travel in the same direction. If one car travels at 60 miles per hour and the other travels at 45 miles per hour, in how many hours will they be 60 miles apart? 
math
Two cars leave the same point at noon. One car travels North and the other car travels East. Suppose the North bound car is travling 40mph and after two hours, the two cars are 100 miles apart. How fast is the other car going? 
Algebra
Two cars start at the same point at Alexandria, verginia, and travel Ans 50mph, 55mph 2 opposite directions. One car travels 5 miles per hour faster than the other car. After 4 hours, the two cars are 420 miles apart. Find the speed … 
math
Two cars leave at the same time from towns that are 460 miles apart and travel toward each other. They meet after 4 hours. Find the rate of each car if one car travels 13 miles per hour faster than the other. 
Math
Two cars leave the same town and travel in opposite directions. At the end of 8 hours, the cars are 896 miles apart. Find the rate of each car if the rate of one car is 4 mi/hr more than the rate of the other. 
Math
Two cars are 400 miles apart and start towards one another, one car traveling 4 miles per hour slower than the other. After 3 hours, the cars are 40 miles apart. Find the speed of each car 
math
Two cars leave Kansas City at the same time. One car is moving east and the other west. After 5 hours, the cars are 575 miles apart. One car is traveling 15 miles per hour faster than the other. Let S = the speed of the slower car … 
math
2.Two cars leave Kansas City at the same time. One car is moving east and the other west. After 5 hours, the cars are 575 miles apart. One car is traveling 15 miles per hour faster than the other. Let S = the speed of the slower car …