Question 646760: two cars, which are 424 miles apart and whose speeds differ by 8 miles per hour, are moving toward each other. If they meet in 4 hours, find the speed of each car.
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! two cars, which are 424 miles apart and whose speeds differ by 8 miles per
hour, are moving toward each other.
If they meet in 4 hours, find the speed of each car.
:
Let s = the speed of the slower car
then
(s+8) = speed of the faster
:
Write a distance equation: dist = time * speed
4s + 4(s+8) = 424
4s + 4s + 32 = 242
8s = 424 - 32
8s = 392
s = 392/8
s = 49 mph is the slower car
then
49+8 = 57 mph is the faster car
:
:
Check this; find the dist traveled by each car
4(49) = 196 mi
4(57) = 228 mi
----------------
total d: 424 mi
|
|
|
