Answer:
Car 1=64 km/h
Car 2=74 km/h
Step-by-step explanation:
The formula for speed is
s=dt
For the first car, we know d
and plugging it into the formula gives us
s1=93t
We know the second car is
12 km/h
faster and the distance is
111 km
, so the formula in terms of the first car's speed would be
s1+12=111
t=s2
Now we can solve for
s1
in the second equation
s1=111t−12
Now we can set the two
s1
equal to each other and solve for
t93t=111t−1293=111−12t=18t=32hours
Now we can plug
t
into the first car equation to solve for the speed of it
s
1
=93 km32h=62 km/h
We know the second car is
12 km/h
faster, so
62 km/h+12 km/h=74 km/h
Step-by-step explanation: