SOLUTION: A car leaves Hartford traveling north at 56 km/h. Another car leaves Hartford one hour later traveling north on the same road at 84 km/h. How far from Hartford will the second car

Question 967353: A car leaves Hartford traveling north at 56 km/h. Another car leaves Hartford one hour later traveling north on the same road at 84 km/h. How far from Hartford will the second car overtake and pass the first car?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
What is the 1st car's head start?

km
------------------
Start a stopwatch when the 2nd car leaves Hartford
Let = distance in km 2nd car travels
until it catches 1st car
Let = time in hrs on stopwatch when 2nd
car catches 1st car
-----------------
Equation for 1st car:
(1)
Equation for 2nd car:
(2)
--------------------
By substitution:

hrs
and
(2)
(2)
168 km from Hartford the 2nd car overtakes the 1st
------------
check:
(1)
(1)
(1)
OK

RELATED QUESTIONS
a car leaves LA traveling north at 59 km/ph. another car leaves LA an hour later on the... (answered by stanbon)

I need help on an algebra problem...... A car leaves Los Angeles traveling north at 56... (answered by josgarithmetic)

Car A leaves traveling 66m/h traveling south.Two hours later,932 miles away,car B leaves... (answered by josgarithmetic)

A car leaves a town traveling at 72 km/h. An hour later, a second car leaves the same... (answered by josmiceli)

a car leaves New York traveling south at 50m/hr. One hour later another car leaves New... (answered by solver91311)

a jet leaves the charlotte, north carolina, airport traveling at an average rate of 564... (answered by Alan3354)

A car traveling on an interstate highway leaves a rest stop at 3 p.m., traveling at 75... (answered by josmiceli)

Mr. Abou leaves Edmonton traveling north at an average speed of 60 km/h. An hour later... (answered by josmiceli)

Mr. Abou leaves Edmonton traveling north at an average speed of 60 km/h. An hour later... (answered by jorel555)