two trains are 416 miles apart, and their speeds differ by 20 mph. They are traveling toward each other and will meet in 4 hours. Find the speed of the slower train.

Question

amistre64 · Answer

we just did this but with airplanes .... right?

anonymous · Answer

Yeah... lol but I still don't know how to exactly do it lol.. :)

amistre64 · Answer

how do we measure speed?

anonymous · Answer

i think she left

anonymous · Answer

I'm here lol

anonymous · Answer

Idk how to measure the speed

amistre64 · Answer

wave your arms so we can see you :)

amistre64 · Answer

speed is distance divided by time

anonymous · Answer

I did... Do you see me?

anonymous · Answer

Okay.... So how do I set it up?  :/

amistre64 · Answer

if you travel 15 miles in 5 hours; you are going 15/5 miles per hour;  or simple 5 mph

amistre64 · Answer

we know the total distance; so the sum of the distances traveled by each have to equal the total right?  since they meet when they meet

anonymous · Answer

true....

amistre64 · Answer

Distance A = some speed times 4 hours

Distance B = (some speed + 20) times 4 hours

and A + B = 416

anonymous · Answer

20x=416?

amistre64 · Answer

youve got the right idea, but we have to match the information in the problem :)

amistre64 · Answer

416 = 4s + 4(s+20)

anonymous · Answer

amistre64 can you help with my question next plz?

amistre64 · Answer

416 = 4s + 4(s+20)
  /4     /4         /4
-------------------
104 = s + s + 20

104 = 2s + 20
 /2          /2
--------------
  52 = s + 10
-10         -10
------------
  42 = s

anonymous · Answer

I got 42!!!

amistre64 · Answer

42 is good :)

anonymous · Answer

Awe... you beat me lol :/

anonymous · Answer

:) yay!

amistre64 · Answer

by the way, not that I need any medals, some people like the notion of getting a medal for a good answer.  If you dont see a "good medal" button next to a persons name you mihgt need to refresh your browser by hitting f5.