Question

please help. 2 cars leave from the same point @ the same time, traveling in opposite direction. One car travels 15 mph slower than the other, after 6 hrs they are 630 miles apart. Find the rate of each car.

Answer 1

let the speed of first=x mph
speed of second car=x-15 mph
Relative speed v=x+x-15=2x-15
time t=6 hrs
distance S=630 miles
s=v*t
630=(2x-15)*6
630=12x-90
12x=630+90=720
x=720/12=60
speed of first=60 mph
speed of second car=60-15=45 mph

Answer 2

thank you

Answer 3

yw