At noon, ship A is 130 km west of ship B. Ship A is sailing east at 30 km/h and ship B is sailing north at 20 km/h. How fast is the distance between the ships changing at 4:00 PM? This is kinda confusing...need help please!!!

Question

babynini · Answer

What..college do you go to by chance? xD I legit just did this question!

anonymous · Answer

Really? University actually!

babynini · Answer

Calc 1?

babynini · Answer

Bah unoriginal problem-writers! xP

anonymous · Answer

yope

babynini · Answer

oh how fuun o.o

anonymous · Answer

yh yh...not so fun!

anonymous · Answer

what's confusing is the 4pm..not sure how to go about that

babynini · Answer

Righto. let me look through all my scratch paper to try and find it lol.
You multiply the x and the y by 4 eventually. since the time form noon to four is four hours.

babynini · Answer

Have you tried drawing it out? :)

anonymous · Answer

lol...okay...yeah, I did...just wasn't sure of the time like would it be from 12am or 12noon?

babynini · Answer

12 noon, for sure.

babynini · Answer

K, so still need help?

babynini · Answer

|dw:1446619451979:dw|
so this is sort of how I drew it xD