Question 373587
car leaving vernon x mph
car leaving Salem = x+10 mph
..
they both leave towards each other ..
Add up speeds
x+x+10 = 2x +10 mph
..
time = 1 . 36 mins
= 1 3/5 hours
=8/5 hours
..
d= rt
144 = (2x+10)* 8/5
multiply by 5
5*144 = 8*(2x+10)

/8
5*144/8 = 2x+10
5*18 = 2x+10
90=2x+10
-10....... -10
90-10=2x
80=2x
/2
40 =x
x = 40 mph
other car 50 mph
...
m.ananth@hotmail.ca