Question 1178317: If the car traveling west is moving 10 miles per hour faster than the car traveling east, and the two cars are 342 miles apart after 3 hours, find the speed of each car.
Found 3 solutions by mananth, ikleyn, MathTherapy:
Answer by mananth(16946)   (Show Source):
You can put this solution on YOUR website!
If the car traveling west is moving 10 miles per hour faster than the car traveling east, and the two cars are 342 miles apart after 3 hours, find the speed of each car.
let speed of car going east be x mph
car traveling west will be x+10 mph
They are moving in opposite directions
effective speed = 2x+2 mph
distance =342 miles
time = 3 hours
d= speed * time
342 = (2x+2)*3
342 = 6x+6
6x= 336
x= 56 mph car going east
Add 10 to the other car
Answer by ikleyn(52873)  (Show Source):
You can put this solution on YOUR website! .
If the car traveling west is moving 10 miles per hour faster than the car traveling east,
and the two cars are 342 miles apart after 3 hours, find the speed of each car.
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As usual, the solution by @Mananth is absurdist and incorrect.
I came to bring a correct solution.
let speed of car going east be x mph
car traveling west will be x+10 mph
They are moving in opposite directions
effective speed separating is 2x+10 mph
distance =342 miles
time = 3 hours
d= speed * time
342 = (2x+10)*3
342 = 6x+30
6x= 312
x= 52 mph car going east
Add 10 to the other car
ANSWER. 52 mph for the car going east. 62 mph for the car going west.
CHECK. (52 + 62)*3 = 342 miles. ! Correct !
Solved (correctly).
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For simple Travel & Distance problems, see introductory lessons
- Travel and Distance problems
- Travel and Distance problems for two bodies moving in opposite directions
- Travel and Distance problems for two bodies moving in the same direction (catching up)
in this site.
They are written specially for you.
You will find the solutions of many similar problems there.
Read them and learn once and for all from these lessons on how to solve simple Travel and Distance problems.
Become an expert in this area.
Answer by MathTherapy(10556)  (Show Source):
You can put this solution on YOUR website!
If the car traveling west is moving 10 miles per hour faster than the car traveling east, and the two cars are 342 miles apart after 3 hours, find the speed of each car.
That other person is WRONG!!.
The slower car's speed is NOT 56 mph
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