the faster truck is going 2mph faster than the slower truck
after 5hrs they are 635 miles apart
what is the rate of the faster truck
what is the rate of the slwoer truck
2007-12-18 01:51:49 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
oh yeh theyre traveling in opp directions
2007-12-18 02:09:40 · update #1
oh yeh theyre traveling in opp directions
2007-12-18 02:10:22 · update #2
Slower truck = 62.5mph
Faster truck = 64.5mph.
The trucks are headed in opposite directions, and after 5 hours, the slower stuck has gone 312.5 miles, while the faster truck has gone 322.5 miles.
312.5 + 322.5 = 635
2007-12-18 02:00:19 · answer #1 · answered by gribbling 7 · 0⤊ 0⤋
If the faster truck is only going 2 miles per hour faster than the slower, it could only be 10 miles further after 5 hours no matter what the speed.
2007-12-18 10:03:02 · answer #2 · answered by dude 2 · 0⤊ 0⤋
Slower truck going 62.5 mph ; faster one 64.5 mph.
Here is a step-by-step method to solve this type of problem :
Call the speed of the slower truck 's', and the faster one (s + 2).
So s + (s + 2) is the distance traveled in one hour
So 5(s + s + 2) is the distance traveled in 5 hours
Then 5(2s + 2) = 635
10s + 10 = 635
10s = 625
s = 62.5 mph -- the speed of the slower truck
and s + 2 = 64.5 mph -- the speed of the faster truck.
Check : 62.5 mph x 5 hours = 312.5 miles
64.5 mph x 5 hours = 322.5 miles
312.5 miles + 322.5 miles = 635.0 miles -- CHECK OK.
2007-12-18 10:05:41 · answer #3 · answered by Don E Knows 6 · 0⤊ 0⤋
Let x = mph speed of faster truck, x-2 = speed of slower truck.
In 5 hours faster truck has gone 5x miles, slower has gone 5(x-2) miles.
5x - 5(x-2) = 635
5x - 5x +10 = 635
???
Sorry, I goofed somewhere
2007-12-18 09:59:24 · answer #4 · answered by fcas80 7 · 0⤊ 0⤋
Let speed of fast truck br vf, speed of slow truck by vs. Trucks move a distance
xf = vf*t & xs = vs*t in a time t.
Now let d = 635 miles and te = 5 hours. Then
xf - xs = vf*te -vs*te = d
d = (vf-vs)*te
So vf -vs = d/te = 127 mph
But your said that vf-vs = 2 mph and it would be impossible to get 635 miles separation after 5 hours. Better check your problem statement.
2007-12-18 09:58:07 · answer #5 · answered by nyphdinmd 7 · 0⤊ 0⤋
They are traveling in opposite directions.
The faster truck - 64.5 MPH
The slower truck - 62.5 MPH
2007-12-18 10:06:03 · answer #6 · answered by AL in Bama 3 · 0⤊ 0⤋
What are the trucks carrying on board and are the drivers union.......
2007-12-18 09:56:19 · answer #7 · answered by Outside the box 6 · 1⤊ 0⤋