SOLUTION: goofy left his home by car, traveling at a rate of 30 mph. two hours later his brother pluto left his home traveling on the same road at a rate of 45 mph. in how many hours did plu

Question 551951: goofy left his home by car, traveling at a rate of 30 mph. two hours later his brother pluto left his home traveling on the same road at a rate of 45 mph. in how many hours did pluto overtake goofy?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Goofy had a head start of

mi
Start a stopwatch when Pluto leaves
Let = distance that Pluto travels until they meet
Let = time on stopwatch when Pluto
overtakes Goofy
Goofy's equation:
(1)
Pluto's equation:
(2)
---------------
Substitute (2) into (1)
(1)
(1)
(1) hrs
Pluto overtook goofy in 4 hrs
check:
(2)
(2)
(2) mi
and
(1)
(1)
(1)
(1) mi
OK
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