Question

New question? can anyone help!

Answer 1

You need to type your question first. :)

Answer 2

It takes a freight train 5 hours longer to travel 240 miles than it takes a express train to travel 150 miles . the rate of the express train is 20 miles per hour greater than the rate of the freight train . Find the rate of the express train?

Answer 3

Can you help?

Answer 4

Here's a start:
\[D = R\cdot T\]
or , distance equals rate times time.

Distance is in miles
rate is in miles per hour
time is in hours

Answer 5

ok help me finish it off lol

Answer 6

??????

Answer 7

r*t = 240
(r+20)(t-5) = 150

solve the system of equations with substitution

Answer 8

i need help solving it someone please help me!

Answer 9

t = 240/r
plug it into other equation

(r+20)((240/r)-5) = 150
Multiply it out and solve for r

Answer 10

Mary, are you sure you wrote the problem down correctly? Would you please check?

Answer 11

Yeah its written write im so confused though can soneone be more specific and find the answer so i can then find out hoe you got it?

Answer 12

Can you multiply those two binomials the dumbcow gave you?

Answer 13

no not really i dont understand it at all

Answer 14

Can you multiply (x-2)(x+6)?

Answer 15

The answer is 50

Answer 16

How did you get 50 can you show step by step work please !

Answer 17

Not until you answer my question.

Answer 18

well easy way to get rid of "r" in denominator is to multiply both sides by r

-> (r+20)(240-5r) = 150r
-> -5r^2 +240r -100r +4800 = 150r

Answer 19

yes i can do that

Answer 20

Then multiply the two binomials that dumbcow gave you in the same way and post what you get. Maybe you could use the "Draw" option.

Answer 21

???????