SOLUTION: how long will it take a passenger train traveling at 60mph to catch up to a fright train trarveling at 45mph if the freight train had an 90minn head start

Question 520084: how long will it take a passenger train traveling at 60mph to catch up to a fright train trarveling at 45mph if the freight train had an 90minn head start
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
how long will it take a passenger train traveling at 60mph to catch up to a fright train trarveling at 45mph if the freight train had an 90minn head start
.
first, convert 90 minutes to hours:
90/60 = 1.5 hours
.
then applying the distance formula:
Let t = time (hours) for passenger train to catch up
then
60t = 45(t+1.5)
60t = 45t+67.5
15t = 67.5
t = 4.5 hours

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