SOLUTION: At 9 am a car leaves a city traveling west. An good and half later a faster car leaves the same city traveling east. At 2 pm the two cars are 410 miles apart. If the slower car tra
Question 619776: At 9 am a car leaves a city traveling west. An good and half later a faster car leaves the same city traveling east. At 2 pm the two cars are 410 miles apart. If the slower car travels at 2/3 the speed of the faster car, what is the speed of the fast car Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! At 9 am a car leaves a city traveling west.
Assume you mean
An HOUR and half later a faster car leaves the same city traveling east.
At 2 pm the two cars are 410 miles apart.
If the slower car travels at 2/3 the speed of the faster car, what is the speed of the fast car
:
Let s = speed of the fast car
then s = speed of the slower car
:
Find the travel time of the slower car: 9 am to 2 pm = 5 hrs
Find the travel time of the faster car: 5 - 1.5 = 3.5 hrs
:
WRite a distance equation; dist = speed * time
slow car dist + fast car dist = 410 miles s * 5 + 3.5s = 410 s + 3.5s = 410
Multiply by 3
10s + 10.5s = 1230
20.5s = 1230
s =
s = 60 mph is the fast car
then *60 = 40 mph is the slow car
