Problema Solution
two cars travel each other from different terminals 312 kilometers apart. the rate of one car is 2 kph more than the other. how did each car travel if they meet after 3 hours?
Answer provided by our tutors
let
v = the rate of the first car
v + 2 = the rate of the second car
d = 312 km the distance between them
t = 3 hr the time of the travel
since distance = speed*time and the cars travel towards each other we have:
vt + (v + 2)t = d
3v + (v + 2)3 = 312
by solving we find
v = 51 kph
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51 + 2 = 53 kph
the rate of the first car was 51 kmp.
the rate of the second car was 53 kmp.